Question

4. Express cos 75°+cot75° in terms of angles between 0 and 30
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Answer 1

Answer:

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QUESTION :

Express cos 75°+cot 75° in terms of angles between 0° and 30°

SOLUTION :

➡ cos 75° + cot 75°

• cos ( 90° - ø) = sec ø

➡ cos ( 90° - 25° ) + cot 75°

➡ sec 25° + cot 75°

• cot ( 90° - ø) = tan ø

➡ sec 25° + cot ( 90° - 25° )

➡ sec 25° + tan 25°

Hence, it is proved.....

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Step-by-step explanation:

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