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Class 11

Radians and the Trigonometric Functions, Quiz

Five questions on radians, arc length and the trigonometric functions. Pick one answer for each.

5 questions, one mark each. 3 to pass. Suggested time: 10 minutes. Your answers are not recorded.

  1. Convert 150∘150^\circ to radians.
  2. Convert 7π12\displaystyle \tfrac{7\pi}{12} radians to degrees.
  3. An arc of length 2222 cm is on a circle of radius 1414 cm. What angle (in radians) does it subtend at the centre?
  4. sin⁡x=513\displaystyle \sin x = \tfrac{5}{13} and xx lies in quadrant II. Find tan⁡x\tan x.
  5. Evaluate cos⁡780∘\cos 780^\circ.
Unanswered questions are marked wrong.

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