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Prove than tan 56^(@) =("cos " 11^(@) ...

Prove than tan `56^(@) =("cos " 11^(@) + "sin " 11^(@))/("cos " 11^(@) =- "sin "11^(@))`

A

`tan 45^(@)`

B

`tan 56^(@)`

C

`tan 60^(@)`

D

`cot 11^(@)`

Text Solution

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The correct Answer is:
B
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ML KHANNA-TRIGONOMETRY RATIOS AND IDENTITIES-MISCELLANEOUS EXERCISE (SELF ASSESSMENT TEST)
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  10. If theta and phi are angles in the first quadrant such that tan theta ...

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  13. The value of sqrt3 cosec20^@-sec20^@ is equal to:

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