please answer this question
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Answer:
cos 85 + cos 75
=cot(90-5) + cos (90-15)
= tan 5 +sin 15
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Given→
cot 85° + cos 75°
To find→
How to express given trignometric ratios of angle between 0° and 45°.
Solution→
cot 85° + cos 75°
= cot(90° -5°) + cos (90°- 15°)
= tan 5° + sin 15°
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