Given that cosA = -8/17 and sinA is negative, determine the value of tanA.

Question

asked Aug 1, 2022 190k views

1 Answer

Viraj Amarasinghe · Answer 1 · 2022-08-06T06:10:10+0000

Answer:

tan A = -15/8.

Explanation:

sin^2a = 1 - cos^2A

= 1 - (-8/17)^2

= 225/289

So sin A= 15/17

tan A = sin A / cos A

= 15/17 / -8/17

= 15/-8

= -15/8.