Question 1043279
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Determine all solutions of the equation in radians.

Find cos x/2 , given that cos x =1/4  and x terminates in 0 < x < pi/2
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{{{cosx/2)}}} = {{{sqrt((1+cos(x))/2)}}} = {{{sqrt(1 + 1/4)}}} = {{{sqrt(5/4)}}} = {{{sqrt(5)/2}}}.


The sign is "+".


By the way, the first line of the condition is not relevant to its second line.
There is no any equation in this problem.
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