Question

1/2 sin 30°+cos 60°+3/4 sin 90°
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Answer 1

Step-by-step explanation:

1 cos 60° 1 cos 30° = 2 V3 sin 30° = 2 // sin 90° = 1 sin 60° = LHS = sin 30° cos 60° + cos 30° sin 60° 1 1 V3 V3 %3D 1 3 %3D 4 4 4 = 1 RHS = sin 90° 1 LHS = RHS Hence it is proved.