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If tan 25^@ = x, then (tan155^@ - tan115...

If `tan 25^@ = x`, then `(tan155^@ - tan115^@)/(1+tan 155^@ tan115^@)` is equal to

A

`(1-x^(2))/(2x)`

B

`(1+x^(2))/(2x)`

C

`(1+x^(2))/(1-x^(2))`

D

`(1-x^(2))/(1+x^(2))`

Text Solution

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The correct Answer is:
A
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MOTION-TRIGNOMETRIC RATIOS & IDENTITIES -Exercise 1
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  2. If tan A - tan B =x and cot B - cot A=y, then: cot(A-B)=

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  14. If 0 lt x lt pi and cos x + sin x = 1/2, then tan x is

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  17. Find the value of cos 12^(@)+cos 84^(@)+cos 156^(@)+cos 132^(@)

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