Edwin W.

asked • 15d

Trig identities

Suppose that cos𝑥=8/17 and 𝑥 are in the fourth quadrant and that sin𝑦=24/25 and 𝑦 is in the second quadrant. 

Which trig identity would you use for sin(x + y)?

Which trig identity would you use for tan (x - y)?

Mark M.

I would not use an identity for any of them. I would uses one of the stawndard formulas. Look in your text book.


2 Answers By Expert Tutors


Yefim S. answered • 15d

5 (20)

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