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

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

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

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

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

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

The value of (3 + cot 76^(@) cos 16^(@))/( cot 76^(@) + cot 16^(@)) is

The value of cos 20^(@) cos 40^(@)cos 60^(@) cos 80^(@) is equal to .............. A) 1/16 B) 3/16 C) (sqrt3)/(16) D) (sqrt3)/(32)

Value of sin16^@/cos74^@

Find the value of cos^2. pi/16+cos^2. (3pi)/16+cos^2. (7pi)/16 .