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The value of cos^(2)48^(@)-sin^(2)12^(@)...

The value of `cos^(2)48^(@)-sin^(2)12^(@)` is

A

`(sqrt(5)+1)/(8)`

B

`(sqrt(5)-1)/(8)`

C

`(sqrt(5)+1)/(5)`

D

`(sqrt(5)+1)/(2sqrt(2))`

Text Solution

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The correct Answer is:
A
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KUMAR PRAKASHAN-TRIGONOMETRIC FUNCTIONS -SOLUTION OF NCERT EXEMPLAR PROBLEMS (OBJECTIVE TYPE QUESTIONS)
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