Inverse Functions

• The sine function maps an angle to a number. e.g. sin ö/4 =0.707

• The inverse sine function maps a number to an angle. e.g. sin-10.707 = ö/4

• Note the difference between:

The inverse sine: sin-10.707 = ö/4

The reciprocal of sine:

(sin ö/4)-1 = 1/(sin ö/4) = 1/0.707 = 1.414

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