Question

tan^2tita -1/cos^2 tita =-1

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Answer 1

Answer:

${tanθ}^{2} \: - \frac{1}{ {cosθ}^{2} } = - 1 \\ \frac{ {sinθ}^{2} }{ {cosθ}^{2} } - \frac{1}{ {cosθ}^{2} } \\ \frac{ -{ cosθ}^{2}}{ {cosθ}^{2} } \\ - 1$

LHS = RHS

Hence proved

Answer 2

Answer:

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