prove that sec teeta + tan teeta/sec theta-tan theta = [1+sin teeta/costheta]2
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To prove
Proof
Taking LHS,
Multiply with (secθ + tanθ) on both numerator and denominator
Using, (a - b)(a + b) = a² - b²
We know that, sec²θ - tan²θ = 1
Hence,
We know that secθ = 1/cosθ and tanθ = sinθ/cosθ
Hence, we get
= RHS
Hence proved
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