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[" Que."52:],[E=cos^(2)71^(@)+cos^(2)49^...

[" Que."52:],[E=cos^(2)71^(@)+cos^(2)49^(@)+cos71^(@)cos49^(@)],[" di "10E=......]

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If E=cos^(2)71^(@)+cos^(2)49^(@)+cos71^(@) cos 49^(@) , then the value of 10E is equal to

If E=cos^(2)71^(@)+cos^(2)49^(@)+cos71^(@) cos 49^(@) , then the value of 10E is equal to

(sin19^(@))/(cos71^(@))+(cos73^(@))/(sin17^(@))

What is the value of cos46^(@)cos47^(@)cos48^(@)cos49^(@)cos50^(@)...cos135^(@) ?

((sin49^(@))/(cos41^(@))-(cos17^(@))/(sin73^(@)))=?

Evaluate: sin521/2^(@) cos71/2^(@)

e^(log_(e)(cos h^(-1)2)) =

The value of cos 49^(@) - sin 41^(@) is