NBT NBT Mathematics: Trigonometry 1

Question 1

If sin θ = 3/5 and θ is in the first quadrant, what is cos θ?

Accepted Answer

4/5

Answer

3/4

Answer

5/4

Answer

5/3

Question 2

What is the exact value of sin 30° × cos 60°?

Accepted Answer

1/4

Answer

1/2

Answer

√3/4

Answer

3/4

Question 3

In which quadrant is θ if sin θ < 0 and cos θ > 0?

Accepted Answer

Quadrant IV

Answer

Quadrant I

Answer

Quadrant II

Answer

Quadrant III

Question 4

Simplify: sin²x + cos²x + tan²x − sec²x

Accepted Answer

0

Answer

1

Answer

2

Answer

−1

Question 5

The period of y = sin(2x) is:

Accepted Answer

π

Answer

2π

Answer

π/2

Answer

4π

Question 6

Solve for θ ∈ [0°, 360°]: 2sin θ − 1 = 0

Accepted Answer

θ = 30° or 150°

Answer

θ = 60° or 120°

Answer

θ = 45° or 135°

Answer

θ = 30° or 330°

Question 7

In triangle ABC, angle B = 90°, AB = 5 and BC = 12. What is sin A?

Accepted Answer

12/13

Answer

5/13

Answer

12/5

Answer

5/12