Evaluate : sin50^(@)cos40^(@)+cos40^(@...

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

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

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

(sin70^(@)+cos40^(@))/(cos70^(@)+sin40^(@))

cos20^(@)cos40^(@)-sin5^(@)sin25^(@)=

(sin70^(@)+cos40^(@))/(cos70^(@)+sin40^(@))=

(sin70^(@)+cos40^(@))/(cos70^(@)+sin40^(@))=

(sin70^(@)+cos40^(@))/(cos70^(@)+sin40^(@))=?

(2cos40^(@)-cos20^(@))/(sin20^(@))

(2cos40^(@)-cos20^(@))/(sin20^(@))

Evaluate: sec 50^(@) sin 40^(@)+cos 40^(@) cosec 50^(@) .

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