State whether the following are true false. Justify your answer.

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Advertisement

Introduction to Trigonometry

Short Answer Type

Advertisement

21. State whether the following are true false. Justify your answer.
The value of sin θ increases as θ increases.

True as it is clear form the ready reference table.

119 Views

Advertisement

22. State whether the following are true false. Justify your answer.
The value of cos θ increases as θ increases.

80 Views

23. State whether the following are true false. Justify your answer.
sin θ = cos θ for all values of θ.

71 Views

24. State whether the following are true false. Justify your answer.
cot A is not defined for A = 0°.

86 Views

Advertisement

25. Evaluate:

fraction numerator sin space 18 degree over denominator cot space 72 degree end fraction

83 Views

26. Evaluate:

fraction numerator tan space 26 degree over denominator cot space 64 degree end fraction

125 Views

27. Evaluate:

cos space 48 degree space minus space sin space 42 degree

99 Views

28. Evaluate:

cosec space 31 degree space minus space sec space 59 degree.

102 Views

Advertisement

29.

Show that:
tan 48° tan 23° tan 42° tan 67° = 1.

159 Views

30.

Show that:
cos 38° cos 52° - sin 38° sin 52° = 0.

973 Views

2
3
4

Advertisement