|16)quad cos13^(@),cos83^(@),cos43^(@),cos6

cos7^(@)cos23^(@)cos45^(@)cosec83^(@)cosec67^(@)=?

The value of 16cos 10^(@) cos30^(@) cos50^(@)cos70^(@) "is"

The value of (sin43^(@)cos47^(@)+cos43^(@)sin47^(@)) is

Prove that cos 2 0^(@)cos4 0^(@)cos6 0^(@)cos8 0^(@)=1/16

Prove that cos6^(@)*cos42^(@)*cos66^(@)cos78^(@)=(1)/(16)

Prove that cos 6^(@) cos 42^(@) cos 66^(@) cos 78^(@) =(1)/(16)

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

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

" The value of ((sin17^(@))(cos13^(@))+(cos17^(@))(sin13^(@)))/((cos23^(@))(cos37^(@))-(sin157^(@))(sin37^(@))) is equal to

The value of (sin43^(@) Cos47^(@) + cos43^(@) sin47^(@)) is …….. .