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Evaluate : (3 cos 55^(@))/(7 sin 35^(@))...

Evaluate : `(3 cos 55^(@))/(7 sin 35^(@)) - (4 cos 70^(@) cosec 20^(@))/(7 (tan 5^(@) tan 25^(@) tan 45^(@) tan 65^(@) tan 85^(@)))` .

Text Solution

Verified by Experts

The correct Answer is:
`- (1)/(7)`
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