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podryga [215]
3 years ago
9

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

Mathematics
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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