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Math · Advanced Math
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using the same axes, sketch y = tan x + 1 and y = | 2cos2x+1| for  0° <r <180. Hence find the number of solutions, in this interval of the equation

(a) |2cos 2x+1| = tan x + 1

(b) |cos x (2cos 2x + 1)| = | sinx + cos x|

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