tmua 2018 Q6

tmua · Uk · paper1 1 marks Standard trigonometric equations Count zeros or intersection points involving trigonometric curves

Find the number of solutions of the equation
$$x \sin 2 x = \cos 2 x$$
with $0 \leq x \leq 2 \pi$.
A 0
B 1
C 2
D 3
E 4

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Find the number of solutions of the equation

$$x \sin 2 x = \cos 2 x$$

with $0 \leq x \leq 2 \pi$.

A 0

B 1

C 2

D 3

E 4