If we know that the hypotenuse of a right triangle is 180cm, and the hypotenuse of a right triangle is 60cm, we can find the degree of the other two angles and the length of the other side~ Ask for help: know the hypotenuse of a right triangle 180cm, a right side 60cm, find the other two angles and the length of the other side ~ ==||||

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• 1. How to find the length of a right angle side of a right triangle, three angles and one right angle side 15cm? It's been a long time since I left school. I've forgotten trigonometric function, Pythagorean theorem, sine and so on. I've even forgotten the calculation process. Now I have to use it in my work. I'm so helpless Please give me a formula and a detailed calculation process,
• 2. A right triangle, three sides are 3 4 5, why is the smallest angle degree 37 degrees
• 3. What is the angle between 3 and 5 for a right triangle with three sides ratio of 3:4:5
• 4. Why are the three sides of a right triangle continuous numbers, only 3, 4, 5 Explain why
• 5. In a right triangle, the lengths of the two sides are 4 and 5 respectively
• 6. In a right triangle, the three angles are 30, 60 and 90. What is the ratio of the three sides
• 7. For a right triangle, the degrees of three angles are 90 degrees, 30 degrees and 60 degrees respectively, and the right side is 1.5 meters. How long is the other right side?
• 8. On the relationship between the sides and angles of a right triangle A ship sails 10km from port a to port B 60 ° NBE, and then sails 10km to port C 30 ° NBW 1) The distance between a and C ports (the result is accurate to 0.1km); 2) What is the direction of port C in port a?
• 9. How can a right triangle with three sides know how to find three angles? For example, how can a right triangle with three sides of 3, 4, and 5 find its angle according to the change?
• 10. Mathematical right triangle If we know that the perimeter of RT triangle ABC is 4 + 4 times the root sign 3, and the length of the middle line on the hypotenuse is 2, then the area of triangle ABC is (the answer is 8)
• 11. What's the formula for the math problem to multiply the square of (2.5) by 4% with a calculator? Write it
• 12. First, calculate the first three questions with calculator, find out the law, then write out the quotient of the following questions directly, and find out their approximate values ① 11 divided by 111 = ② 12 divided by 111 = ③ 13 divided by 111= 14 divided by 111 = 15 divided by 111 = 16 divided by 111= 17 divided by 111 = 18 divided by 111 = 19 divided by 111= What are the rules?
• 13. Compare the two numbers in the following questions （1）（1/2)^-0.1,(1/2)^0.1 (2)(3/5)^-2/5 ,(3/5)^-3/5 (3) 5^3.1,3^3.1 (4)0.3^-1/5,0.3^-1/3
• 14. Compare the two values in the following groups (1) 0.2 to - 1.5 and 0.2 to - 1.7 (2) 1 / 3 power of (1 / 4) and 2 / 3 power of (1 / 4) (3) The - 1.5 power of 2 and the 0.2 power of 3
• 15. Compare the following numbers: (1) - 3 and - 5 (2) - 2.5 and - 2.25
• 16. Compare the numbers of the following groups （1）1.5^-π,1.5^-3 （2）0.7^-0.3,0.7^-2.3 （3）0.23^-2.3,0.23^-3.4 The second time I was wrong. It should be 0.7 ^ - 0.0.7 ^ 2.3
• 17. Compare the size of the following two numbers - √ 7 and - 3 6 and & # 179; √ 215 2 and (√ 11 + 1 /) / 2
• 18. How do you compare the two numbers? Which number is bigger, 2S / (V1 + V2) or s (V1 + V2) / 2v1v2?
• 19. Compare the size of two numbers √ (5 / 12) + √ (1 / 5) and √ (1 / 3) + √ (2 / 7)
• 20. How to compare two numbers?