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OpenStudy (anonymous):
find the exact value of sin 165 degrees using identites
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Directrix (directrix):
If you write sin of 165 degrees as sin ( 30 + 135), I think you could use the Addition Law for Sines to crank out an exact value of sine of 165.
Directrix (directrix):
OpenStudy (anonymous):
is the answer square root of 3 +1 over square root of 2 times2
Directrix (directrix):
I haven't done the work yet so I don't know. I'll see what I get.
Directrix (directrix):
I got a negative sign where you have the plus. ((square root of 3) - 1) / ( 2 times square root of 2)
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OpenStudy (anonymous):
sorry i wrote that wrong. I have a negative also. Thank you for helping!
Directrix (directrix):
Glad to help.
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