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Find value of a. if tan 5a^2.cot(90+3a^2)

Trigonometry equalities, inequalities and expressions - sin, cos, tan, cot
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Find value of a. if tan 5a^2.cot(90+3a^2)

Postby Guest » Sun Aug 28, 2011 12:15 am

If tan 5a^2.cot(90+3a^2)=(1+sec^2 a - cos^2 b - cos^2 b.tan^b)/(1+tan^2 a)
then value of a = _______
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