please reply if anyone knows
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Heya mate its really very easy...
u need to first multiply both the denominators and thereby the numerators with the opposite denominators and it will cancel off as tanA.cotA is equal to 1 then by substituting the tan²A and cot²A with sec²A and cosec²A u will get the required value.
Hope it helps...
Harshthunder:
not understand explain in copy
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