Question

Evaluate: ( sin 90 + cos 45 + cos 60 ) ( cos 0 - sin 45 + sin 30 )

Answer 1

Answer:

1

Step-by-step explanation:

(sin 90+cos 45+cos 60) (cos0-sin45+sin30)

(1+1/root2+1/2) (1-1/root2+1/2)

taking L.C.M as 2 root 2

(2 root2+2+root2/2 root 2) (2 root2-2+root 2/2root2)

cancelling both the sides

therefore answer is 1