Asked by Courtney
Evaluate the trigonometric functions by memory or by contruscting appropriate triangles for the given special angles.
(a) csc 30deg
(b) sin pi/4
(a) csc 30deg
(b) sin pi/4
Answers
Answered by
Reiny
Somewhere in your notes or your textbook you should have diagrams of the 30-60-90 and the 45-45-90 right-angled triangles and their sides.
remember csc30° = 1/sin30° , which you should know
and π/4 =45°, and you should know that as well
remember csc30° = 1/sin30° , which you should know
and π/4 =45°, and you should know that as well
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