Set 2: Trigonometry (Beginner)

[Variation 1] **Choice B is the best answer.** cos = adjacent/hypotenuse = 15/17

Explanation

Answer: B

PROBLEM

Recent studies show that in a right triangle, the opposite side is 8, adjacent side is 15, and hypotenuse is 17. Find cos(angle).

In a right triangle, the opposite side is 8, adjacent side is 15, and hypotenuse is 17. Find cos(angle).

15/17

✓ Correct

17/8

8/15

Detailed Explanation

[Variation 1] Choice B is the best answer. cos = adjacent/hypotenuse = 15/17

Why others are wrong:

A: 15/17 is incorrect because it does not satisfy the equation.

C: 17/8 is incorrect because it does not satisfy the equation.

D: 8/15 is incorrect because it does not satisfy the equation.