A Draw the graph of for .

MATHEMATICS · Multi-part · A Level · Mathematics · Trigonometry · Trigonometry

Problem

1. a Draw the graph of

y = \cos 3x

for

0 \le x \le 2\pi

. (1) a Draw the graph of

y = \cos 3x

for

0 \le x \le 2\pi

. (2) b Find the value of

y

when

x = \frac{3\pi}{4}

. Mark this point on your graph.