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(cos 9^@ + sin 9^@ )/( cos 9^@ - sin...

`(cos 9^@ + sin 9^@ )/( cos 9^@ - sin 9^@ )`=

A

`tan 26^@`

B

`tan 81^@`

C

`tan 51^@`

D

`tan 54^@`

Text Solution

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The correct Answer is:
D
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NEW JOYTHI PUBLICATION-TRIGONOMETRIC FUNCTIONS-QUESTIONS FROM COMPETITIVE EXAMS
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