An inverse function takes the output and does the opposite to get back to the input. The tan function takes the angle Ɵ and gives the answer to opposite ÷ adjacent (in this example, 5/7).
It may be necessary to use Pythagoras' theorem and trigonometry to solve a problem. The shape ABCDEFGH is a cuboid. Length AB is 6 cm, length BG is 3 cm and length FG ...
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