If `cos1 7^(@)+sin1 7^(@)=k ,`then `cos34^(@)`equals

If cos17^(@)+sin17^(@)=k, then cos34^(@) equals

cos ^ (7) x + sin ^ (4) x = 1

The value of (sin 1^(@) + sin 3^(@) + sin 5^(@) + sin 7^(@))/( cos 1^(@) .cos2^(@).sin4^(@)) is"________"

The value of the expression (2(sin1^(@)+sin2^(@)+sin3^(@)+...+sin89^(@)))/(2(cos1^(@)+cos2^(@)+...+cos44^(@))+1) equals

The value of (sin 1^(@) +sin 3^(@) + sin 5^(@) +sin 7^(@))/(cos 1^(@)*cos 2^(@)sin 4^(@)) is __________

The value of (sin 1^(@) +sin 3^(@) + sin 5^(@) +sin 7^(@))/(cos 1^(@)*cos 2^(@)sin 4^(@)) is __________

The value of (sin 1^(@) +sin 3^(@) + sin 5^(@) +sin 7^(@))/(cos 1^(@)*cos 2^(@)sin 4^(@)) is __________

Let x=sin1^(@) , then the value of the expression (1)/(cos 0^(@).cos 1^(@))+(1)/(cos 1^(@).cos 2^(@))+(1)/(cos 2^(@),cos3^(@))+……..+(1)/(cos 44^(@).cos45^(@)) is equal to

If sin x + sin y = (7) / (5) and cos x + cos y = (1) / (5) then sin (x + y) equal to

If 2 cos theta + sin theta =1 then 7 cos theta + 6 sin theta is equal to