Question

4.1-cOS-A is equal
(a)sin?
(b)tan
A (c)1-sin-A (d)seca
5. (Sin 30°+cos 60°)-(sin 60° + cos 30º) is equal to:
(a)
(b)1+2v3
(c)1-v3
(d)1+3
6. If cos X =% then tan X is equal to:
(a)5/2
(b) (5/2) (C)V512
(d
7. If cos X=alb, then sin X is equal to:
(a)b2- a/b (b)b-alb
(c) v(b2-a)/ (d
8. The value of sin 60° cos 30° + sin 30° cos60° is:
(a)0
(b)i
(c)2 (d)4
9. 2tan 30° 11+tan 30º =
(a)Sin 60° (b)Cos 60 (c)Tan 60' (d)Sin 6
10.sin 2A = 2 sin A is true when À =
(1300
(b)45-
(c)0
(d)60​

Answer 1

Answer:

Question no 5. options C