Question
Calculate the maximum and minimum value of (8cosA +
15sinA + 15), if 'q' lies in the first quadrant.Solution
As we know the maximum value of (asinq + bcosq) = √(a 2  + b 2 )
And, minimum value of (asinq+ bcosq) = -√(a 2  + b 2 )
Now, Maximum value of (8cosA + 15sinA + 15) = √(8 2  + 15 2 ) + 15 = 17 + 15 = 32
Minimum value of (8cosA + 15sinA + 15) = - √(8 2  + 15 2 ) + 15 = - 17 + 15 = - 2
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