Basic Trigonometry

Find the length of side w.

• 21.4 cm

• 18.0 cm

• 36.5 cm

• 43.6 cm

• 45.8 cm

 $\frac{3}{4}\pi$  rad = ...

•  $75\degree$  

•  $105\degree$  

•  $135\degree$  

•  $210\degree$  

•  $270\degree$  

The measure angle of the pict (quadrant IV) is ....

• $30\degree$

• $60\degree$

• $300\degree$

• $330\degree$

• $390\degree$

 $\cos\alpha=\ \ \ ....$  

• 1

•  $\sqrt{3}$  

•  $\frac{1}{2}\sqrt{3}$  

•  $\frac{1}{2}$  

•  $\frac{1}{3}\sqrt{3}$  

 $From\ the\ picture,\ if\ \cos\theta=\frac{2}{3},\ then\ \ x=....$  

•  $3\sqrt{5}$  

•  $4\sqrt{5}$  

•  $5\sqrt{5}$  

•  $6\sqrt{5}$  

•  $7\sqrt{5}$  

 $n\times\tan45\degree\times\cos60\degree\ =\ \sin\ 60\degree\times\operatorname{cotan}\ 60\degree$   the value of n = ...

•  $\frac{1}{2}$  

• 1

•  $\frac{1}{\sqrt{2}}$  

•  $\frac{1}{\sqrt{3}}$  

•  $\sqrt{3}$  

The value of 

 $$\sin\ \frac{\pi}{6}+\cos^2\ \frac{\pi}{3} =...

• 1

• 4/5

• 5/4

• 2

• 3/4

Simplify...

 $\frac{\cot\left(\theta\right)\sin\left(\theta\right)}{\cos\left(\theta\right)}$  

•  $\sec\left(\theta\right)$  

• 1

•  $\cos\theta$  

•  $\sin\theta$  

•  $\tan\theta$  

• 10.1

• 10.0

• 9.0

• 8.86

• 8.70

What is the measure of angle A?

• 50 degrees

• 60 degrees

• 78 degrees

• 74 degrees

• 70 degrees