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28 March, 22:25

Write the following trigonometric ratio using an acute angle: tan 162 degrees

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  1. 28 March, 23:40
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    -tan (18°) or tan (-18°)

    Step-by-step explanation:

    The angle given is in the 3rd quadrant, so the tangent is negative. The reference angle is ...

    180° - 162° = 18°

    Tangent is an odd function, so ...

    tan (-x) = - tan (x)

    This means we can write the required ratio two ways:

    tan (-18°) - tan (18°)
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