Homework Help: pre calc

Posted by Marcy on Tuesday, March 1, 2011 at 10:52pm.

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)

pre calc - Reiny, Tuesday, March 1, 2011 at 11:41pm
I will do the 2nd one:

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

sinŲ = y/r = 4√3/8
cscŲ= 8/(4√3)
cosŲ = x/r = 4/8 = 1/2
secŲ = 2
tanŲ = y/x = 4√3/4 = √3
cotŲ = 1/√3

do the others the same way.

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