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9 Sec2 a − 9 Tan2 a is Equal to - Mathematics

MCQ

9 sec2 A − 9 tan2 A is equal to

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  • 1

  • 9

  • 8

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Solution

Given:

`9 sec^2 A-9 tan^2 A`

`=9 (sec^2 A-tan^2 A)`

We know that, `sec^2 A-tan^2 A=1`

Therefore, `9 sec^2 A-9 tan^2 A=9`

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APPEARS IN

RD Sharma Class 10 Maths
Chapter 11 Trigonometric Identities
Q 25 | Page 58
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