Calculator evaluation of trigonometric expressions

Calculator evaluation of trigonometric expressions

Secondary 2
TGM Original Questions

Evaluate each of the following, giving answers to 3 significant figures where necessary.

  1. \(2\sin37^\circ+3\cos37^\circ\)
  2. \(18\tan32^\circ\)
  3. \(\dfrac{\sin52^\circ}{\cos38^\circ}\)
  4. \(\tan^{-1}(0.85)\)

Solution:

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Answer:(a) \(3.60\); (b) \(11.2\); (c) \(1\); (d) \(40.4^\circ\).

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