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sashaice [31]
3 years ago
7

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

Mathematics
1 answer:
borishaifa [10]3 years ago
5 0

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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