8 cot² A-8 cosec²A is equal to
Options (A) 8
(b) 1/8
(c) -8
(d) -1/8
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We have an identity as:
cosec²A- cot² A = 1
Multiplying both sides with -8,
-8(cosec²A- cot² A )=(-8) (1)
8cot² A - 8cosec²A= -8
Therefore option (c) is the correct one.
cosec²A- cot² A = 1
Multiplying both sides with -8,
-8(cosec²A- cot² A )=(-8) (1)
8cot² A - 8cosec²A= -8
Therefore option (c) is the correct one.
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