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cos70^(@)+sin40^(@)=...

cos70^(@)+sin40^(@)=

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sin20^(@)*cos40^(@)+cos20^(@)*sin40^(@)=(sqrt(3))/(2)

Evaluate : sin50^(@)cos40^(@)+cos40^(@)+cos50^(@)sin40^(@)

Evaluate : sin50^(@)cos40^(@)+cos40^(@)+cos50^(@)sin40^(@)

cos 70^(@) + sin 40^(@)=

sin 70^(@)cos 10^(@) - cos 70^(@) sin 10^(@) = _________

The value of (sin 20^(@) cos 70^(@)+sin70^(@) cos 20^(@) ) is ……….. .

Express cos70^(@)+sin70^(@)+tan65^(@) in terms of trigonometric ratios of angles lying between 0^(@)and45^(@)

Express cos70^(@)+sin70^(@)+tan65^(@) in terms of trigonometric ratios of angles lying between 0^(@)and45^(@)

(sin 70^(@) + cos 40^(@))/(cos 70^(@) + sin 40^(@)) =

(sin(70^(@))+cos(40^(@)))/(cos(70^(@))+sin(40^(@)))= ..........