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3 years ago

9

I need help and please explain how to actually solve these please! Thankyou

1 answer:

Bezzdna [24]3 years ago

7 0

Realize the tangent function has a period of 180°, so when your calculator (or memory) tells you
.. θ = arctan(-1)
.. θ = -45°
you can translate that value into the desired range by adding multiples of 180° to get the two solutions ...
.. θ = 135°
.. θ = 315°

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