Question

tan a-cot a=1-2cos²A÷sin A ×cos A​

Answer 1

Answer:

01-Apr-2018 · 1 answer

COT A - TAN A= COS A/SIN A- SIN A /COS A =COS²-SIN²A/ SIN A COS A =COS²A-(1-COS²A)/SIN A  ...

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