prove the following id
Asked by aanchal.padyal | 25th May, 2010, 10:03: AM
Expert Answer:
Taking out cosθ common we can write LHS,
cosθ(1/(1 - sinθ) + 1/(1 + sinθ)) =
cosθ(2/(1 - sin2θ)) =
...using the identity a2 - b2 = (a + b)(a - b) and simplifying the fraction like 1/c + 1/d = (c + d)/cd
cosθ(2/cos2θ)) =
2/cosθ = 2 secθ = RHS.
Regards,
Team,
TopperLearning.
Answered by | 25th May, 2010, 07:05: PM
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