How to find a reference angle

Practice Questions

ACT Math › How to find a reference angle

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1

Using trig identities, simplify sinθ + cotθcosθ

2

What is the reference angle for $125^{\circ}$ ?

3

What is the reference angle for $45^{\circ}$ ?

4

What is the reference angle for $257^{\circ}$ ?

5

Evaluate the expression below.

6

Simplify sec4_Θ_ – tan4_Θ_.

7

What is the reference angle for $855^{\circ}$ ?

8

What is the reference angle of an angle that measures 3510 in standard position?

9

Unit_circle

In the unit circle above, if $\Theta =30^{\circ}$ , what are the coordinates of ?

10

Using trigonometry identities, simplify sinθcos2θ – sinθ

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