Question

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Answer 1

david's procedure is correct becsuse Keisha didnt put the correct value of sin theta in equation, she forgot to mention negative sign. though solution are same but in other case it could have gone wrong

Answer 2

CosQ = +- 15/17

Explanation:

As it is seen in the attachment that the two individuals Keisha and David tries to find the value of TanQ, SecQ, SimQ and CosQ. The steps in the attachment is fairly correct which is why the answer for both individuals are accurate. To What's more identified by Keisha is the solution for using TanQ and SecQ. Similarly, David finds out by basic SinQ and CosQ values. Consequently both will give same value CosQ = +- 15/17 at end therefore they both are correct.