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Question

STATEMENT - 1 : 1+sinA1sinA=secAtanA
STATEMENT - 2 : sinA2sin2A2cos3AcosA=tanA

A
Statement - 1 is True, Statement - 2 is True, Statement - 2 is a correct explanation for Statement - 1
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B
Statement - 1 is True, Statement - 2 is True : Statement 2 is NOT a correct explanation for Statement - 1
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C
Statement - 1 is True, Statement - 2 is False
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D
Statement - 1 is False, Statement - 2 is True
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Solution

The correct option is D Statement - 1 is False, Statement - 2 is True
1+sinA1sinA=1+sinA1sinA×1+sinA1+sinA
=(1+sinA)21sin2A=1+sinAcos2A=1+sinAcosA=secA+tanA

sinA2sin2A2cos3AcosA=sinA(12sin2A)cosA(2cos2A1)=tanAcos2Acos2A=tanA


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