Trigo Quiz for 4N SSSP

What would you use to find the length CE?

• $\frac{a}{\sin A}=\frac{b}{\sin B}$

• $a^2=b^2+c^2-2ab\cos A$

• Toa Cah Soh

• $\frac{1}{2}ab\sin C$

What would you use to find length SR

• Pythagoras Theorem

• Toa Cah Soh

• $\frac{a}{\sin A}=\frac{b}{\sin B}$

• $a^2=b^2+c^2-2bc\cos A$

Find length SR

• 16.39 cm

• 4.05 cm

• 1.1 cm

• 10.6 cm

Which of the following statements is/are correct?

• $\angle BDE=60\degree$

• $\frac{BD}{60\degree}=\frac{5}{80\degree}$

• $\frac{BD}{\sin60\degree}=\frac{3.26}{\sin80\degree}$

• $BD^2=3.26^2+5^2+2\left(3.26\right)\left(5\right)\cos60\degree$

Find the length BD. Give your answer correct to 3 sf

What would you use to find the area of triangle CDE?

• $\frac{a}{\sin A}=\frac{b}{\sin B}$

• $a^2=b^2+c^2-2ab\cos A$

• Toa Cah Soh

• $\frac{1}{2}ab\sin C$

Find the area of triangle CDE. (No need to key in the units)

Find the length CE. Give your answers correct to 3 sf. (No need to key in the units)

If you need to find the area of the triangle, what would you need?

• $\angle HJI$

• $\angle HIJ$

• $\angle IHJ$

• length HJ

If you need to find the length HJ, what would you need?

• $\angle HJI$

• $\angle HIJ$

• $\angle IHJ$

• length HJ