Find the value of Sin theta - ?2 .sin theta + 3 sin theta + 2cos theta when theta = 60

Asked by  | 22nd Sep, 2012, 07:21: PM

Expert Answer:

We know:
sin 60 = sqrt 3/2
cos 60 = 1/2
 
So, we have:
sin 60 - sqrt 2 .sin 60 + 3 sin 60 + 2cos 60
= sqrt 3/2 - sqrt 2 (sqrt 3/2) + 3 sqrt 3/2 + 2. 1/2
 
Now, simplify this to get the answer.

Answered by  | 24th Sep, 2012, 10:04: AM

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