5. Trigonometric Functions
Interactive practice questions
The diagram below shows a number of points on the unit circle. Which point corresponds to a distance of $\frac{\pi}{2}$π2 units around the circle?
$C$C
A
$B$B
B
$D$D
C
$A$A
D
Easy
< 1min
The diagram below shows a number of points on the unit circle. Which point corresponds to a distance of $\frac{21\pi}{4}$21π4 units around the circle?
Easy
< 1min
The diagram below shows a number of points on the unit circle. We want to find the point that is $1.6$1.6 units around the circle.
Easy
< 1min
Given that $x=\pi$x=πc represents half a circle, what fraction of the circumference of the unit circle does $x=\frac{\pi}{4}$x=π4c represent?
Easy
1min
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