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Choose the correct option. 9sec^2A-9t...

Choose the correct option.
`9sec^2A-9tan^2A=`

A

1

B

8

C

9

D

0

Text Solution

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The correct Answer is:
B
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OSWAL PUBLICATION-INTRODUCTION TO TRIGONOMETRY AND TRIGONOMETRIC IDENTITIES -NCERT CORNER (Textbook Questions) (Exercise - 8.4)
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  5. Choose the correct option. 9sec^2A-9tan^2A=

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  6. (1+tan theta+sec theta)(1+cot theta-"cosec "theta) is equal to :

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  9. Prove the following identity, where the angles involved are acute a...

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  15. Prove the following identities, where the angles involved are acute a...

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