Simplify: sin A / (1 - cos A) if A is in the first quad... – Trigonometry

Trigonometryhard · Past Paper

Simplify: sin A / (1 - cos A) if A is in the first quadrant.

Acosec A + cot A

Bcosec A - cot A

Ctan A

Dsec A

✓ Correct Answer: A — cosec A + cot A

Multiply by (1+cos)/(1+cos): sin(1+cos)/sin^2 = (1+cos)/sin = cosec A + cot A.

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