tylerb0312 tylerb0312

01-01-2021
Mathematics

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

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cwrw238 cwrw238

01-01-2021

Answer:

tan A = -15/8.

Step-by-step 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.

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