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Mathematics, 05.05.2020 12:09 drax13

Please explain how I can find these answers, we just went over this in class and I don't get it

1. Convert 315 degrees to radians and find the sin, cos, and tan of that angle

2. For an angle Θ with the point (-5, 7) on its terminating side, what is the value of sine of this angle?

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Please explain how I can find these answers, we just went over this in class and I don't get it
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