If the expression + sin(32x + 1) - ...
Question

# If the expression + sin(32x + 1) - 18 cos(19x ) + cos(56x + x) - 9 sin(x + 177) is expressed in the form of a sinx + b cosx, then (a + b) is equal to (A) 17 (B) 27 (C) 13 (D) 23

JEE/Engineering Exams
Maths
Solution
110
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( 18 cos x+9 sin x ) en eamparing with beos ( x+a sin x ) ( therefore a=9 )