would you rather read 12 pages every night in a chapter book with 144 pages or read 50 pages 3 times a week in a chapter book wi
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notice, if the original area was πr², then the new area has a factor in front of it, that much.
Answer:
<u>______________________________________________________</u>
<u>TRIGONOMETRY IDENTITIES TO BE USED IN THE QUESTION :-</u>
For any right angled triangle with one angle α ,
or
or
<u>SOME GENERAL TRIGNOMETRIC FORMULAS :-</u>
- <u></u>
or
- <u></u>
or
<u>______________________________________________________</u>
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)