Question

Tell me Guys ekdam acche se explain Karo please​

Answer 1

Here, it is a ratio of CosA or SecA:

$\rm\huge CosA = \rm\frac{1}{SecA}$

Answer 2

Trigonometry

let the triangle ABC

cos A = AC/AB

secA = AB/AC

hence ,

cosA × secA = 1

then ,

$\cos(a) = \frac{1}{ \sec(a) }$

I hope it helps you

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