# MCQs in Plane Trigonometry Part I - Answers

Answers key for the Compiled MCQs in Plane Trigonometry Part 1 of the series as one topic in Engineering Mathematics in the ECE Board Exam.

Below are the answers key for the Multiple Choice Questions in Plane Trigonometry – MCQs Part 1.

1. – cos A

Review: Solution for Number 1

2. 0.4

Review: Solution for Number 2

3. cos 2A

Review: Solution for Number 3

4. IV

Review: Solution for Number 4

5. sin B < 0 and cos B > 0

Review: Solution for Number 5

6. csc 20°

Review: Solution for Number 6

7. 30o

Review: Solution for Number 7

8. A + 2B = 30°

Review: Solution for Number 8

9. 20.705°

Review: Solution for Number 9

10. 20.90°, 69.1°

Review: Solution for Number 10

11. 5 degrees

Review: Solution for Number 11

12. 330°

Review: Solution for Number 12

13. 0.087

Review: Solution for Number 13

14. 8/17

Review: Solution for Number 14

15. 4/3

Review: Solution for Number 15

16. 6°

Review: Solution for Number 16

17. 1

Review: Solution for Number 17

18. sin 2θ

Review: Solution for Number 18

19. 2 tan θ

Review: Solution for Number 19

20. 1

Review: Solution for Number 20

21. cos θ

Review: Solution for Number 21

22.

Review: Solution for Number 22

23. 30°

Review: Solution for Number 23

24. 0.281

Review: Solution for Number 24

25. 1.34

Review: Solution for Number 25

26. 45, 135, 225, 315 degrees

Review: Solution for Number 26

27. 1

Review: Solution for Number 27

28. 0

Review: Solution for Number 28

29. cot θ

Review: Solution for Number 29

30. 32.47°

Review: Solution for Number 30

31. 0.256

Review: Solution for Number 31

32. 60°

Review: Solution for Number 32

33. 39.49

Review: Solution for Number 33

34. 374 m

Review: Solution for Number 34

35. 4 and 10

Review: Solution for Number 35

36. 4.03

Review: Solution for Number 36

37. 21.7, 321.8 mph

Review: Solution for Number 37

38. 73.61 m

Review: Solution for Number 38

39. 54.23 m

Review: Solution for Number 39

40. 25 ft, 36.87°

Review: Solution for Number 40

41. 79.3 m

Review: Solution for Number 41

42. 259.28

Review: Solution for Number 42

43. 0.169 m/sec

Review: Solution for Number 43

44. 92.54 feet

Review: Solution for Number 44

45. 33.51 m

Review: Solution for Number 45

46. 34.64 cm

Review: Solution for Number 46

47. 341.78 m

Review: Solution for Number 47

48. 125 m

Review: Solution for Number 48

49. 14,586 sq. units

Review: Solution for Number 49

50. 240

Review: Solution for Number 50

### Online Questions and Answers in Plane Trigonometry Series

Following is the list of practice exam test questions in this brand new series:

Plane Trigonometry MCQs
PART 1: MCQs from Number 1 – 50                        Answer key: PART I
PART 2: MCQs from Number 51 – 100                   Answer key: PART II
PART 3: MCQs from Number 101 – 150                   Answer key: PART III

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