" i) "cos105+sin105^(@)

105^(2)

The value of cos105^(@)+sin105^(@) is

The value of cos 105^@ + sin 105^@ is

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

Prove that : (i) "sin"105^(@)+cos105^(@)=(1)/(sqrt(2)) (ii) cos105^(@)+cos15^(@)="sin"75^(@)-"sin"15^(@)

Prove that 4 sin 15^(@) sin 75^(@) = sqrt2 ( cos105^(@) + sin 75^(@))

Prove that (i) "cos " 15^(@) - " sin " 15^(@) = (1)/(sqrt(2)) (ii) " cot " 105^(@) - " tan " 105^(@) =2sqrt(3) (iii) (tan 69^(@) + tan 66^(@))/(1-tan 69^(@) tan 66^(@)) =-1

What is sin105^(@)+cos105^(@) equal to ?

Find the value of the following (i) sin105^(@)+cos105^(@)