Asked by missy
Evaluate the expression. Assume that all angles are in quadrant 1.
1. cos(arccos4/5)
1. cos(arccos4/5)
Answers
Answered by
Steve
by definition,
arccos(4/5) is the angle whose cosine is 4/5
so, cos(that angle) is . . . 4/5!
arccos(4/5) is the angle whose cosine is 4/5
so, cos(that angle) is . . . 4/5!
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