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sin^2 17. 5^(@)+sin^2 72. 5^(@) is equa...

`sin^2 17. 5^(@)+sin^2 72. 5^(@)` is equal to

A

`cos ^(2) 90^(@)`

B

`tan ^(2) 45^(@)`

C

`cos ^(2) 30^(@)`

D

`sin ^(2) 45^(@)`

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES -COMPETITIVE THINKING
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