Question
The value of (sin 60 Âș cos 30 Âș - cos 60 Âș sin 30
Âș) Â is equal to:Solution
(sin 60 Âș cos 30 Âș - cos 60 Âș sin 30 Âș) = â3/2 x â3/2 â 1/2 x 1/2 = 2/4 = 1/2 Alternate Solution sin A cos B - cos A sin B = sin (A - B) So, (sin 60 Âș cos 30 Âș - cos 60 Âș sin 30 Âș) = sin ( 60 Âș - 30 Âș) = sin 30 Âș = 1/2 Â
In the Figure given below, find the value of x?
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