# Trigonometry Quiz

## Make sure to try these on a piece of paper first

In the following diagram, a circle has radius r (metres), and angle $latex \theta$ (radians), and centre O.

The area of the shaded sector is $latex \frac{6\pi }{5}$, and the length of the sector AB is $latex \frac{3\pi }{5}$.

a) Find the value of r.

b) Find the value of $latex \theta $.

In a triangle PQR, side $latex PQ=3 \; cm$, and side $latex PR=2 \; cm$. The area of the triangle PQR is $latex 2\; cm^{2}$.

State two possible values for angle $latex Q\hat{P}R$ (in degrees).

**This question is part of theMath SL Online Revision Course**

(but keep in mind that at least the first question of each topic is free!)

**This question is part of theMath SL Online Revision Course**

(but keep in mind that at least the first question of each topic is free!)

**This question is part of theMath SL Online Revision Course**

(but keep in mind that at least the first question of each topic is free!)

**This question is part of theMath SL Online Revision Course**

(but keep in mind that at least the first question of each topic is free!)

**This question is part of theMath SL Online Revision Course**

(but keep in mind that at least the first question of each topic is free!)

**This question is part of theMath SL Online Revision Course**

(but keep in mind that at least the first question of each topic is free!)

**This question is part of theMath SL Online Revision Course**

(but keep in mind that at least the first question of each topic is free!)

**This question is part of theMath SL Online Revision Course**

(but keep in mind that at least the first question of each topic is free!)