Question

secx+tanx=p then prove that sinx=(p^2-1)/(p^2+1)​

Answer 1

Trigonometry EQUATIONS ★

☣ p²-1 = 2TAN²x + 2 SEC(x)TAN(x)

☣ p²+1= 2SEC²x + 2 SEC(x)TAN(x)

☣ p²-1/p²+1 = 2TAN(x) [ TAN(x) + SEC (x) ]

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2SEC(x) [ SEC(x) + TAN(x) ]

☣ TAN(x) / SEC(x) = SIN ( x)