# Worksheet: Finding Values of Trigonometric Functions by Using Reference Angles

Q1:

What is the reference angle for ?

Q2:

Find the smallest negative equivalent of .

Q3:

Find the smallest negative equivalent of .

Q4:

Find the smallest positive equivalent of .

• A
• B
• C
• D
• E

Q5:

Find the smallest positive equivalent of .

• A
• B
• C
• D
• E

Q6:

Find the smallest positive equivalent of .

• A
• B
• C
• D
• E

Q7:

Find the smallest positive equivalent of .

Q8:

Given the angle , find the principal angle.

• A
• B
• C
• D
• E

Q9:

Given the angle , find the principal angle.

• A
• B
• C
• D
• E

Q10:

Find without using a calculator.

• A
• B
• C
• D

Q11:

Find without using a calculator.

• A
• B
• C
• D

Q12:

Find without using a calculator.

• A
• B
• C
• D

Q13:

Find without using a calculator.

• A
• B2
• C
• D

Q14:

Find without using a calculator.

• A
• B2
• C
• D

Q15:

Find without using a calculator.

• A
• B
• C
• D

Q16:

Find the value of .

• A
• B
• C
• D

Q17:

Find the value of .

• A
• B
• C
• D

Q18:

Find the value of .

• A2
• B
• C1
• D

Q19:

Find the value of .

• A
• B
• C
• D

Q20:

Find the value of .

• A1
• B
• C
• D

Q21:

Find the value of .

• A
• B
• C
• D