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Trigonometric Quiz

## Quiz Answers

1 How do you find the inverse of sin in your calculator?

- sin-1
- alpha, sin-1
- 2nd key, sin1
**2nd key, sin-1**

2. How do you find the inverse of tangent in your calculator?

- 2nd key, tan1
- tan-1
**2nd key, tan-1**

3. How do you find the inverse of cosine in your calculator?

- 2nd key, cos1
- cos-1
- alpha, cos-1
**2nd key, cos-1**

4. Value of , for = 1 Where 0° < < 90° is:

- 30
- 60
**45**- 135

5. Value of sec2 26° – cot2 64° is:

- 0
**1**- -1
- 2

6. Product tan 1° tan 2° tan 3°………….. tan 89° is:

**1**- 0
- -1
- 90

7. Find t to the nearest degree using sin

- 40
- 41
- 30
**31**

8. Find a to the nearest degree using cosin a

- 55
**56**- 58
- 65

9. If sin (A + B) = 1 = cos (A – B) then

- A=B=90
**A=B=45**- A=B=0

10. What is the inverse cosine?

**cos-1**- cos-2
- cos1

11. The value of 5 cos 0^0 + sin 90^0 is:

- 5
**6**- 7
- 8

12. What is the inverse sin?

- cos-1
**sin-1**- sin1

13. How does the value of cos x varies when x increases from 0^0 to 90^0:

**Decreases**- Increases
- Increases and then decreases

14. What is the inverse tangent?

- tan1
- sin-1
**tan-1**

15. Find the length of H. Round to the nearest tenth

- 14.6
- 15.2
**14.4**- 14.8

16. Find the value of sin^2 54^0 – cos^2 36^0

- -1
- 1
**0**

17. Find Y. Round to the nearest tenth

- 15.9
- 13.2
- 7.4
**12.5**

18. Cos 45^0 + tan 45^0 – sin 45^0 is:

**1**- -1
- 2
- -2

19. Find x. Round to the nearest tenth.

- 14.6
- 13.3
**10.0**

20. Sin =?

- Hypotenuse / Opposite
**Opposite / Hypotenuse**- Hypotenuse / Adjacent

21. Tangent = ?

- Opposite / Adjacent
- Adjacent / Hypotenuse
**Opposite / Adjacent**

22. Find K. Round to the nearest tenth.

- 45.9
- 43.8
**74.8**

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