(cot + csc-1)/(cot-csc 1)=(1 + cos)/sin

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Originally Posted by shambhavi

(cot + csc-1)/(cot-csc 1)=(1 + cos)/sin

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Hint: convert the cotangent and cosecant functions to their sine and cosine equivalents. Then I suggest mutiplying through by sin/sin. Finally note that the denominator is now of the form A-B; if you multiply through by (A+B)/(A+B) good things will happen.