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29 November, 03:51

What are the sine, cosine, and tangent of Θ = 3 pi over 4 radians?

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  1. 29 November, 06:20
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    Our angle teta is:

    teta = 3pi/4

    since that is larger than pi/2 but less than pi that means that our angle lies in II quadrant (x negative y positive)

    sin (3pi/4) = √2/2

    cosine and tangent of that angle must be negative because of position of the angle.

    cos (3pi/4) = - √2/2

    tan (3pi/4) = - 1
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