pre calc

find the exact values of the six trigonometric functions of theta if the terminal side of theta in standard position contains the given point:

1. (8, 4)
2. (4, 4√3)
3. (0, -4)
4. (6, 2)

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  1. I will do the 2nd one:

    for the point (4,4√3)
    x = 4, y = 4√3 , r = 8 (by Pythagoras)

    sinØ = y/r = 4√3/8
    cscØ= 8/(4√3)
    cosØ = x/r = 4/8 = 1/2
    secØ = 2
    tanØ = y/x = 4√3/4 = √3
    cotØ = 1/√3

    do the others the same way.

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