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1+secA/secA=sin2/1-cosA (prove this)

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1+secA/secA=sin2/1-cosA (prove this)

Posted by Suman Roy 8 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Rishabh Raj 8 years, 2 months ago

RHS- 1+secA/secA changes into 1/secA + secA/SecA . Then SecA/SecA is equal to one and 1/SecA is equal to cosA . Then RHS is equal to 1 + cosA. LHS- sin^2A is equal to 1-cos^2A. 1 -Cos^2 change into (1+cosA)(1-cosA). Then 1-cosA cancel by 1-cosA. Then LHS is equal to 1+cosA. Hence, RHS=LHS. PROVED....

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Posted by Hari Anand 6 months, 1 week ago

CBSE > Class 10 > Mathematics