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Given vector a=(sinθ,-2) and b=(1, cosθ) perpendicular to each other, where (0,π,2),[1] find the values of sinθ and cosθ
Sinθ-2cosθ=0, so tanθ=2>0, so the angle is acute
And the square of sinθ+ the square of cosθ=1
Sinθ=(2 Nos.5)/5 for solving the equations
Cos θ=(root 5)/5
Sinθ-2cosθ=0, so tanθ=2>0, so the angle is acute
And the square of sinθ+ the square of cosθ=1
To solve the equation system, sinθ=(2 nos.5)/5
Cos θ=(root 5)/5
A, b are two non-zero vectors, and the equivalent condition that a is perpendicular to b is |a+b|=|a-b|
(1) If |a+b|=|a-b|a is perpendicular to b, ab=0(a+b)^2=a^2+b^2+2+2ab=a^2+b^2-2ab=(a-b)^2,|a+b|=|a-b|(2) If |a+b|=|a-b|a is perpendicular to b|a+b|,(a+b)^2=(a-b)^2, ab=0, i.e. a is perpendicular to b...
Vector operation! Urgent Vector Pn (n-1,2n-1) Vector Pn+1(n,2n+1) | PnPn+1|=? Vector operation! Urgent Vector Pn (n-1,2n-1) Vector Pn+1(n,2n+1), please | PnPn+1|=? Vector operation! Urgent Vector Pn (n-1,2n-1) Vector Pn+1(n,2n+1), please |PnPn+1|=?
N-(n-1)=1
(2N+1)-(2n-1)=2
PnPn+1=(1,2)
| PnPn+1|= Root 5
Calculation of vectors [Urgent! ] If a vector is 1b vector is 2, c=a+b, and c is perpendicular to a, then the angle between vector a and b is? This is a meeting test, and I'm stuck ==
Draw a right triangle at 120°. Where a, c are the straight edges and b is the oblique edges. it according to the direction of the target.
Draw a right triangle at 120°, where a and c are straight and b is oblique. Then you can see it according to the direction of the target.
Some Basic Problems of Vector Operation Does the addition and subtraction between vectors meet the format of AB+BC=AC? For example, can the addition of CA+CB be calculated? Similarly, can subtraction only satisfy the format of OA-OB=BA? That's not a lot of questions to do. Some Basic Problems of Vector Operation Does the addition and subtraction between vectors meet the format of AB+BC=AC? For example, can the addition of CA+CB be calculated? Can subtraction only satisfy the format OA-OB=BA? That's not a lot of questions to do. Some Basic Problems of Vector Operation Does the addition and subtraction between vectors satisfy the format of AB+BC=AC? For example, can the addition of CA+CB be calculated? Can subtraction only satisfy the format OA-OB=BA? That's not a lot of questions to do.
AB+BC=AC is called triangle formula. Remember that any two vectors can be added or subtracted. There is triangle rule and parallel quadrilateral rule on the geometry, but if you only give a few points, such as O, A, B, C and some vectors between them to operate, the operation result may not be in these several...
AB+BC=AC is called triangle formula. Remember that any two vectors can be added or subtracted. There is triangle rule and parallel quadrilateral rule on the geometry, but if you only give a few points, such as O, A, B, C and some vectors between them, the result of the operation may not still be in these several...
AB+BC=AC is called triangle formula. Remember that any two vectors can be added or subtracted. There is triangle rule and parallel quadrilateral rule on the geometry. But if you only give a few points, such as O, A, B, C and some vectors between them, the result of the operation may not still be in these several...
How to calculate the angle between two vectors?
Cos=a▪b/|a|.|b|
RELATED INFORMATIONS
- 1. How to Prove the Intersection of Triangular Divide Lines with Vector How to make the triangle into a quadrilateral Vector. How to Prove the Intersection of Three Angular Divide Lines of a Triangle Vector How to make the triangle into a quadrilateral Vector. How to Prove the Intersection of Triangular Split Lines with Vector How to make a triangle into a quadrilateral Vector.
- 2. The module length of vector A+B = the module length of vector A-B =2 times the module length of vector A The angle between the first two terms is? The module length of vector A+B = the module length of vector A-B =2 times the module length of vector A The angle between the first two terms of the formula is?
- 3. Let the eigenvalue of the real symmetric matrix A symmetric matrix A be the transposition of the eigenvector corresponding to -1,1,1,-1 be (0,1,1). My dear, who will teach me!
- 4. But he didn't do it right. He either did n' t get it right, or he didn't read the question clearly or copy the number wrong. Moreover, he did n' t have enough time to answer the question (40 minutes). What if he gave me an hour to check it? But it's wrong. It's either the wrong calculation or the wrong question or the wrong number. And it's too late (40 minutes)............................................................
- 5. The probability of birth in the same month is ______(the default number of days per month is the same, and the result is accurate to 0.001) for at least 2 of the 9 students randomly selected.
- 6. What does a vector multiply by 1? What is a vector multiplied by 1?
- 7. Given the triangle ABC, if vector AB * vector AC = vector AB * vector CB =1, what is the modulus of vector AB? Given the triangle ABC, if the vector AB*vector AC=vector AB*vector CB=1, what is the modulus of the vector AB?
- 8. 9. Given two points A (2,0,3), B (1,2,4), calculate the module, direction cosine and direction angle of vector AB.
- 9. Known vector OA=(k,12), OB=(4,5), OC=(-k,10), and A, B and C are collinear, then the value of k is () A.-2 3 B.4 3 C.1 2 D.1 3
- 10. What is the condition for three vectors to be coplanar?
- 11. The vector a=(sinθ,-2) is known to be perpendicular to the vector b=(1, cosθ), where θ belongs to (0,π/2). 2 If 5 cos (θ-φ)=3 times 5 cosφ.0 The vector a=(sinθ,-2) and vector b=(1, cosθ) are known to be perpendicular to each other, where θ belongs to (0,π/2). 2 If 5 cos (θ-φ)=3 times 5 cosφ.0
- 12. If vector a =(2 times root number 3,2), vector b =(2,2 times root number 3), then the angle between vector a and vector b is equal to?
- 13. Given that e is the unit vector, vector of a =(root number 3-1, root number 3+1), and the angle between e vector and a vector is 45°, then e vector is equal to? Given that e is the unit vector, the vector of a =(root number 3-1, root number 3+1), and the angle between e vector and a vector is 45°, then e vector is equal to?
- 14. Is the physical quadrilateral rule and the triangular rule the same? Is the principle of parallelogram and triangle physically identical? Is the principle of parallelogram and triangle physically the same?
- 15. What is the vector addition rule,?
- 16. Is the rate vector or scalar? And And the average acceleration? What about instantaneous and average rates? Why? Is the rate vector or scalar? And And the average acceleration? What about instantaneous and average rates? Why? Why?
- 17. Why was the current scalar? What else was the vector parallelogram rule? She was extremely grateful. Why is current scalar? What else is the vector parallelogram rule? Thank you so much..
- 18. What is the vector AB plus the vector AC equal to
- 19. Is there any internal relation between the rank of matrix and the rank of vector group?
- 20. The quantity product problem of vector: if a=3i+2j-k, b=i-j+2k, then the quantity product of 5a and 3b is equal to The quantity product is not |a||b|Why is it directly 5a*3b=45-30-30=-15 Do not multiply by angle! The quantity product of vectors: if a=3i+2j-k, b=i-j+2k, then the quantity products of 5a and 3b are equal to The quantity product is not |a||b|Why is it directly 5a*3b=45-30-30=-15 Do not multiply by angle!