Home
Class 11
MATHS
सिद्ध कीजिए कि cos A * cos (60^(@)+...

सिद्ध कीजिए कि
` cos A * cos (60^(@)+A) cos (60^(@) - A) = 1/4 cos 3A`

Promotional Banner

Similar Questions

Explore conceptually related problems

Prove that: cos A cos(60^(@)-A)cos(60^(@)+A)=(1)/(4)cos3A

Prove that: cosA. Cos(60^(@)+A)cos(60^(2)-A)=1/4 cos3A

cos alpha cos(60^(@) - alpha ) cos (60^(@) + alpha ) = 1/4 cos 3 alpha.

(cos60 ^ (@) + 1) / (cos60 ^ (@) - 1) =

Period of cos x cos(60^(@) - x) cos (60^(@) + x) is

Prove that cos(60^(@)+A) + cos(60^(@)-A)-cosA=0

cos 20^(@)* cos 40^(@) * cos 60^(@) * cos 80^(@) =

cos^(-1) sin (-60^(@))

cos theta cos (60^(@) + theta ) * cos (60^(@) - theta ) =

cos 6^(@) * cos 42^(@) * cos 60^(@) * cos 66^@ * cos 78^@=