Calculator evaluation of trigonometric expressions
Calculator evaluation of trigonometric expressions
Secondary 2
3 marks
TGM Original Questions
Evaluate \(\tan^{-1}(0.85)\). Give the answer to 3 significant figures, or to 1 decimal place for an angle.[3]
Give non-exact lengths and areas to 3 significant figures, and angles to 1 decimal place.
Solution:
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Answer:\(\tan^{-1}(0.85)=40.364536\ldots^\circ=40.4^\circ\).
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