Question

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

Answer 1

The answer is 2.
cos 0 =1
sin45= 1/(2)^(0.5)
sin 30= 1/2
sin 90= 1
cos 45 = 1/(2)^(0.5)
cos 60= 1/2

Answer 2

hope it will help you