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sin 20^(@) sin 70^(@) - cos 20^(@) cos 7...

`sin 20^(@) sin 70^(@) - cos 20^(@) cos 70^(@)` का मान क्या है ?

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

sec70^(@)sin20^(@)+cos20^(@)cosec70^(@)=2

sec70^(@)sin20^(@)+cos20^(@)"cosec"70^(@)=?

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

Find sin 20^@ -cos 70^@ .

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

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

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

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

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