Question

Please help

Answer 1

With???

Answer 2

with

Answer 3

a) Express \[f(\Theta) = 3\cos \Theta - 4sinΘ \] in the form \[r \cos (\theta+\alpha)\].
b) Hence, find:
i) the maximum value of \[f(\theta)\]
ii) the minimum value of \[\frac{ 1 }{ 8+f(\theta) }\]