Cos (90-theta) • cosec90-theta) =tano. How?​

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TRIGONOMETRY IDENTITIES TO BE USED IN THE QUESTION :-

For any right angled triangle with one angle α ,

SOME GENERAL TRIGNOMETRIC FORMULAS :-

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Now , lets come to the question.

In a right angled triangle , let one angle be α (in place of theta) .

So , lets solve L.H.S.

= R.H.S.

∴ L.H.S. = R.H.S. (Proved)

the final price would be 29.6925

step-by-step explanation:

39.59 minus 25% equals 29.6925