Question

Which statement about triangle

Answer 1

Answer:

B

Step-by-step explanation:

We can find y first in the right triangle using the Pythagorean Theorem

      5² = 4²+y²

25 -16 = y²

    √9 = √y²

      3 = y

A. sinY = opposite side of angle y / hypothenuse  = 3/5  ≠4/5

B. tanX = opposite side of angle x/ adjacent side to the angle x = 4/3

C. sin²Y -cos²Y = 1 ; (3/5)² -( 4/5)² = 9-16/ 25 = 7/25 ≠ 1

cosY = adjacent side to angle Y/ hypothenuse = 4/5

D. cosX =adjacent side to angle X/ hypothenuse = 3/5 ≠ 5/3