Calculate `sin 105^@ and cos 15^@`

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

If sin (A-B)=sin A cos B-cos A sin B and cos (A - B) = cos A cos B + sin A sin B . find the values of sin 15^@ and cos 15^@.

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

sin105^(@)+cos105^(@)=

cos 15^@+ cos 105^@ =?

Find the value of sin 15^@+ cos 15^@

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

Evaluate: i) cos75^(@) , ii) cos15^(@) , iii) tan75^(@) , iv) tan105^(@) , v) sin105^(@)

What is sin 105^@ + cos105^@ equal to:

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