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.

Introduction to Trigonometry

Short Answer Type

161.

If $sin space straight theta space equals space 3 over 4 comma$ prove that : $square root of fraction numerator cosec squared straight theta minus 1 over denominator sec squared straight theta minus 1 end fraction end root space equals space fraction numerator square root of 7 over denominator 3 end fraction.$

93 Views

162.

Evaluate the following:
sin 60°. cos 45° + cos 60° sin 45°

130 Views

163.
Evaluate the following:
sin 30°. cos 45° + cos 30° sin 45°

Solution not provided.
Ans. $fraction numerator square root of 3 plus 1 over denominator 2 square root of 2 end fraction semicolon$

98 Views

164.

Evaluate the following:
3 cos² 30° + sec² 30° + 2 cos 0° + 3 sin 90° - tan² 60°

121 Views

165.

Evaluate the following:
sin² 60° + sec² 30° + sin 90° + 3 cos 0° - tan² 60°

90 Views

166.

Evaluate the following:
$fraction numerator 4 space sin space 30 degree space plus space cos squared 45 degree minus 4 cos squared 60 degree over denominator 2 space sin space 30 degree. space cosec space 30 degree plus tan squared 45 degree end fraction.$

90 Views

167. If cos (A - B) = 1, sin (A + B) = 1. Find A and B.

72 Views

168. If tan (A + B) = 1, tan (A - B) = 1. Find A and B.

108 Views

169.

If $sin left parenthesis straight x minus straight y right parenthesis space equals space 1 half space and space cos left parenthesis straight x plus straight y right parenthesis space equals space 1 half.$ Find x and y.