An identity used in an equation

An identity used in an equation

6 marks
TGM Original
Prove that sec2x-11+tan2x=sin2x, where cos x 0. Hence solve sec2x-11+tan2x= 34 for 0 <= x<2pi.

Solution:

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Answer:Identity proved; \(x=\frac\pi3,\frac{2\pi}3,\frac{4\pi}3,\frac{5\pi}3\).

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