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sin 6^(@) sin 42^(@) sin66^(@) sin 78^(@...

`sin 6^(@) sin 42^(@) sin66^(@) sin 78^(@) =`

A

`1//4`

B

`1//8`

C

`1//16`

D

`1//64`

Text Solution

Verified by Experts

The correct Answer is:
C
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ML KHANNA-TRIGONOMETRY RATIOS AND IDENTITIES-PROBLEM SET (5) ( MULTIPLE CHOICE QUESTIONS)
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  5. sin 6^(@) sin 42^(@) sin66^(@) sin 78^(@) =

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  6. Prove that cos 6^(@) cos 42^(@) cos 66^(@) cos 78^(@) =(1)/(16)

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  9. If A=tan6^(@) tan 42^(@) and B= cot 66^(@)cot 78^(@) then-

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