How do you find the exact value of $\frac{cos 60 + sin 30}{4}$ $(cos60+sin30)/4$ ?

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Answer 1 · 2016-11-26T18:35:19

$\frac{1}{4} = 0.25$ $1/4 = 0.25$

Hints :
${cos 60}^{0} = \frac{1}{2}$ $cos 60^0 = 1/2$ = 0.5
${sin 30}^{0} = \frac{1}{2}$ $sin 30^0 = 1/2$ = 0.5

Solution:

$\frac{{cos 60}^{0} + {sin 60}^{0}}{4}$ $(cos 60^0 + sin 60^0)/4$ = $\frac{0.5 + 0.5}{4}$ $(0.5 + 0.5)/4$ = $\frac{1}{4}$ $1/4$ = 0.25

How do you find the exact value of cos60+sin304(cos60+sin30)/4?