The vlaue of `cos^(2)76^(@)+cos^(2)16-cos76^(@)cos16^(@),`is

The value of cos^(2)76^(@)+cos^(2)16^@-cos76^(@)cos16^(@), is

Write the value of cos^(2)76^(@)+cos^(2)16^(@)-cos76^(@)cos16^(@)

Evaluate : cos^(2)76^(@) +cos^(2)16^(@) - cos76^(@).cos16^(@)

Write the value of cos^2 76^@+cos^2 16^@- cos76^@ cos16^@

Prove that cos^(2)76^(@)+cos^(2)16^(@)-cos76^(@)cos16^(@)=(3)/(4)

Statement-1: The vlaue of cos20^(@)cos40^(@)cos60^(@)cos80^(@)is1/16. Statement-2: for any theta, cos thetacos(60^(@)-theta)cos(60^(@)+theta)=1/4cos3theta

Statement-1: The vlaue of cos20^(@)cos40^(@)cos60^(@)cos80^(@)is1/16. Statement-2: for any theta, cos thetacos(60^(@)-theta)cos(60^(@)+theta)=1/4cos3theta

The value of (3+cot76^(@)cot16^(@))/(cot76^(@)+cot16^(@)) is