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Angle α lies in quadrant II, and tanα=−12/5. Angle β lies in quadrant IV, and cosβ=35. What is the exact value of cos(α+β)? Enter your answer in the box.
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Angle α lies in quadrant II, and tanα=−12/5. Angle β lies in quadrant IV, and cosβ=35.

What is the exact value of cos(α+β)?

Enter your answer in the box.

Angle α lies in quadrant II, and tanα=−12/5. Angle β lies in quadrant IV, and cos-example-1
User ScottL
by
7.6k points

1 Answer

4 votes

Answer:

Explanation:

[-5/13] 3/5 +12+13 [-4/5 = - 63/65

User Manish Shrivastava
by
8.3k points
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