Math, asked by Lalbiakzuala, 17 days ago

secQ-1/secQ+1=1-cosQ/1+cosQ​

Answers

Answered by riyars080102
0

Step-by-step explanation:

using,

secQ = 1/cosQ

L.H.S. = \frac{ secQ - 1}{secQ + 1} \\ = \frac{ \frac{1}{cosQ} - 1}{\frac{1}{cosQ} + 1} \\ = \frac{ \frac{1}{cosQ} - 1}{\frac{1}{cosQ} + 1} \times \frac{cosQ}{ cosQ} \\ = \frac{1 - cosQ}{1 + cosQ}

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