(–3, 4) is a point on the terminal side of an angle. Find the sine, cosine and tangent of the angle

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How to find the sine, cosine, tangent given a point that goes through the terminal side of an angle - trigonometry.

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This helped me with my homework a ton, thanks !!

zacharyrodriguez
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So is this what would essentially be polar coordinates? I'm going through khan and they don't actually even go through polar within algebra2, trig or pre calc so I feel like I'm missing out

I was still able to come up with the way of doing this, I'd just originally assumed for this question that I'd be applying the coordinate (-3, 4) to the unit circle that way I could get an actual angle or something

ninolatimer
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He says the Sin, Cos, and Tan of the angle in standard position would be the same as the the Sin, Cos, and Tan of the angle he refers to as "reference angle". I don't think that is quite correct. the pos/neg sign is opposite. For example: let us say that the angle in standard position is 110 degress and the "reference angle" 80 degrees. Tan 110 is approx -2.747 and Tan 80 is 2.747.

warblerab