Question

4. Express cos 75°+cot 75° in terms of angles between 0° and 30°.
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Answer 1

Answer:

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Answer 2

Step-by-step explanation:

SOLUTION :

Given : cos 75° + cot 75°

cos 75° + cot 75° = cos (90°−15°) + cot (90°−15°)

= sin 15° + tan 15°

[cos (90 - θ) = sin θ , cot (90 - θ) = tan θ]

Hence, cos 75° + cot 75° = sin 15° + tan 15° .

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