Question

27. Find the maximum value of 5 cosx + 3 cos x +*+8 (1) 18 (2) 7 (3) 8 + 134 (4) 15

JEE/Engineering Exams

Maths

Solution

125

4.0 (1 ratings)

( frac{sqrt{a^{2}+b^{2}}}{(sin alpha cos theta-cos alpha sin 0)}=frac{b}{sqrt{a^{2}+b^{2}}} ) ( a^{2}+b^{2} sin (alpha-theta) )