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If tan x=−1, and 90° < x < 180°, what is cos⁡(x−30°)?

If tan x=−1, and 90° < x < 180°, what is cos⁡(x−30°)?
asked 173k views
4 votes
If tan x=−1, and 90° < x < 180°, what is cos⁡(x−30°)?

asked
User Hesham Yassin
by
7.6k points

1 Answer

3 votes

Answer:

√2/2

Explanation:

answered
User Lunikon
by
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