Solve triangle problem in triangle ABC: a = 7, B = 5, a = 80 degrees, solve triangle

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• 1. In △ ABC, a = 22, a = 30 ° and B = 45 ° are known to solve triangles
• 2. 1. In △ ABC, it is known that a = π / 3, a = √ 3, B = 1, a = 4, B = 4 √ 3, a = 30 ° solution, B = 5 √ 3, C = 15, B = 30 ° solution Why can't we get 150 degrees
• 3. In the triangle ABC, solve the triangle according to the following conditions, two of which are A a=7,b=2,c=8 B a = 10, B = 45 degrees, C = 75 degrees\ C a = 7, B = 5, a = 80 degrees D a = 7, B = 8, a = 45 degrees
• 4. In triangle ABC, solve the triangle according to the following conditions There are two solutions A、b=10,A=45°,C=75° B、a=60,b=48,C=60° C、a=7,b=5,A=80° D、a=14,b=16,A=45°
• 5. If the ratio of the length of the two right sides of a right triangle is 2:1 and the length of the hypotenuse is 10cm, then the area of the right triangle is______ ．
• 6. It is known that the sum of the lengths of two right sides of a right triangle is 10cm (1). When the length of one right side is 4cm, the area of the right triangle is obtained (2). Let
• 7. The two right sides of a right triangle are 6cm and 8cm respectively. The length of the hypotenuse is 10cm. The area of the right triangle is 5cm______ cm2．
• 8. The three sides of a right triangle are 6cm 8cm 10cm. The area of the triangle is () cm2, and the height of the hypotenuse is (0cm)
• 9. Is it easy to solve the problem with the help of the above diagram? Please use this method to solve the following problem. (first draw a picture) an isosceles right triangle, the length of the hypotenuse is 10cm. What is the area of this triangle?
• 10. Right triangle, the length of each side is 6cm.8cm.10cm. What is the area of the triangle and the height of the hypotenuse
• 11. In △ ABC, a = 30 °, B = 120 ° and B = 5 are known to solve triangles
• 12. In the triangle ABC, we know a = √ 3, B = √ 2, B = 45 degrees, and solve the triangle
• 13. In △ ABC, the angles a, B and C are opposite to three sides a, B and C respectively. It is known that a = 5, B = 2 and B = 120 ° to solve the triangle
• 14. Solving triangle: in triangle ABC, B = 2 √ 3, a = 60 ° and a = 3 √ 2 are defined by sine
• 15. In triangle ABC, ad is perpendicular to BC, CE is perpendicular to AB, ad = 12 cm, CE = 15 cm, AB side is 4 cm shorter than BC side Q: what is the area of triangle ABC in square centimeters?
• 16. As shown in the figure, in △ ABC, the bisector of the outer angle ∠ CBD and ∠ BCE intersects at point O, and it is proved that ∠ BOC = 90 ° - & frac12; ∠ a
• 17. When ∠ BOC = 60 ° and OE and od are the angular bisectors of ∠ AOC and ∠ BOC, then ∠ EOD = -___ ,∠COE＝____ The angular bisector of the BOE is___ .
• 18. Point AOB on a straight line ∠ ABC = 2 / 1 ∠ BOC + 30 ° OE bisection ∠ BOC, what does it mean to find the degree of ∠ BOE in OE bisection 1 / 2 wrong number, ha ha... Pay attention to help me solve the problem
• 19. abcd+abc+bcd+cda+dab+ab+bc+cd+da+ac+bd+a+b+c+d=2009 a+b+c+d=? It's urgent,
• 20. Known: as shown in the figure, ad ∥ BC, ab ∥ DC, verification: △ ABC ≌ △ CDA