8 cosec2A - 8 cot2A = ?
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Step-by-step explanation:
We know,in trigonometry chapter,there is an identity :- 1 + Cot^2theta = Cosec^2theta
Here, theta = A
=> Cosec^2A - Cot^2A = 1 ( eq 1)
Therefore, 8 cosec^2A - 8 cot^2A =8(Cosec^2A - Cot^2A) [Here we have taken 8 common and put value of cosec^2A - cot^2A from eq 1 ]
therefore,8 cosec^2A - 8 cot^2A = 8 × 1 = 8 Ans.
dared1451:
thank you
welcm
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