`sin 15^(@) + cos 105 ^(@) =`

Prove that: sin 105 ^(@) + cos 105 ^(@) = cos 45 ^(@)

sin 105^(@) + cos 105^(@) = cos theta, then theta =

Prove that sin 105^(@) + cos 105^(@) = cos 45^(@)

Show that sin 105^(@) + cos 105^(@) =(1)/(sqrt(2))

Show that sin 150^(@) + cos 105^(@) =(1)/(sqrt(5))

Calculate sin 15^(@) and cos15^(@)

cos15^(@)+cos105^(@)=

( sin 75^(@) - sin 15^(@))/( cos 15^(@) - cos 75^(@))=

sin 10^(@)+sin 20^(@) + sin 40 ^(@) + sin 50 = A) sin 15^(@) +sin 75^(@) B) cos 15^(@) + cos75^(@) C) sin 70^(@) + sin 80^(@) D) cos 70^(@) + cos 80^(@)

sin15^(@)+cos105^(@)=?