tmua 2016 Q10

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

How many solutions does the equation $x \tan x = 1$ have in the interval $- 2 \pi \leq x \leq 2 \pi$ ?
A 0 B 1 C 2 D 3 E 4 F 5 G 6

& E & 10 & E

How many solutions does the equation $x \tan x = 1$ have in the interval $- 2 \pi \leq x \leq 2 \pi$ ?

A 0
B 1
C 2
D 3
E 4
F 5
G 6