TMUA Practice Question — Worked Solution

P1·Trigonometry·7.0CrackTMUA Original

solution-countingsurd-equationextraneous-rootssign-conditioninterval-scaling

How many values of

x

in the interval

0 \leq x < \frac{5 π}{2}

satisfy

2 - 2 cos 2 x = 2 sin 2 x ?

(As usual,

x

denotes the non-negative square root.)

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