Trigonometric Identities and Special Triangles Exercise

Use the trigonometric identities and special triangles to find the value of the variables (in red mostly!):

"Do not use a calculator!"

1
sin2 A + cos2 A = x
2
cos 60° = sin y°
3
tan 45° (in root form)
4
sin2 63° = 1 − cos2 B°
5
tan 36° = 
6
cos C ° = 
7
sin D° = cos 20°
8
tan w° = 
9
sin2 56° + cos2 E° = 1
10
sin 30° = p