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Worksheet: Evaluating Trigonometric Functions Using Reference Angles

Q1:

Evaluate s i n 2 2 5 .

  • A 1 2
  • B1
  • Cundefined
  • D 1 2

Q2:

Find c s c 1 5 0 without using a calculator.

  • A 3
  • B 2 3
  • C 2
  • D2

Q3:

Evaluate s i n 3 3 0 .

  • A 1 3
  • B 3 2
  • C 1 2
  • D 1 2
  • Eundefined

Q4:

Find t a n 1 5 0 without using a calculator.

  • A 1 2
  • B 3 2
  • C 1 3
  • D 1 3

Q5:

Find c s c 5 1 0 without using a calculator.

  • A 3
  • B 2 3
  • C 2
  • D2

Q6:

Find s i n 4 8 0 without using a calculator.

  • A 3
  • B 1 2
  • C 3 2
  • D 3 2

Q7:

Find t a n 1 2 1 5 without using a calculator.

  • A 1 2
  • B 1 2
  • C1
  • D 1

Q8:

Find c o s 1 2 3 0 without using a calculator.

  • A 1 3
  • B 1 2
  • C 3 2
  • D 3 2

Q9:

Find t a n 1 5 9 0 without using a calculator.

  • A 1 2
  • B 3 2
  • C 1 3
  • D 1 3

Q10:

Find s i n 1 5 6 0 without using a calculator.

  • A 3
  • B 1 2
  • C 3 2
  • D 3 2

Q11:

Find c s c 1 5 6 0 without using a calculator.

  • A 1 3
  • B 2
  • C 2 3
  • D 2 3

Q12:

Find s i n 1 2 0 without using a calculator.

  • A 3
  • B 1 2
  • C 3 2
  • D 3 2

Q13:

Find s i n 1 5 0 without using a calculator.

  • A 1 3
  • B 3 2
  • C 1 2
  • D 1 2

Q14:

Find s i n 8 7 0 without using a calculator.

  • A 1 3
  • B 3 2
  • C 1 2
  • D 1 2

Q15:

Find s i n 1 2 3 0 without using a calculator.

  • A 1 3
  • B 3 2
  • C 1 2
  • D 1 2

Q16:

Find c s c 8 7 0 without using a calculator.

  • A 3
  • B 2 3
  • C 2
  • D2

Q17:

Find t a n 1 2 3 0 without using a calculator.

  • A 1 2
  • B 3 2
  • C 1 3
  • D 1 3