4. sin ?B = 2 sin B is true when B is equal to
(a) 90°
(b) 60°
(C) 30°
(d) 0°
5. 5 tanA-5 sec? A +1 is equal to
(a) 6
(b) -5
(c) 1
(d) -4
6. If y sin 45° cos 45º = tan2 45° - cos30°, then y=.
(a) -1/2
(b)1/2
(c) -2
(d) 2.
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4. sin ?B = 2 sin B is true when B is equal to
(a) 90°
(b) 60°
(C) 30°
(d) 0°
5. 5 tanA-5 sec? A +1 is equal to
(a) 6
(b) -5
(c) 1
(d) -4
6. If y sin 45° cos 45º = tan2 45° - cos30°, then y=.
(a) -1/2
(b)1/2
(c) -2
(d) 2.
- 30
- -4
- 1/2
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