cotsquare - 1/
sinsquare
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Solution:
cot²A - 1/sin²A
= cot²A - cosec²A
= - ( cosec²A - cot²A )
*********************************
We know the Trigonometric identity :
Cot²A - cosec²A = 1
************************************
= -1
•••••
cot²A - 1/sin²A
= cot²A - cosec²A
= - ( cosec²A - cot²A )
*********************************
We know the Trigonometric identity :
Cot²A - cosec²A = 1
************************************
= -1
•••••
rksir:
thx
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