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OpenStudy (anonymous):
show that sin A = Sin18˚ is a root of the equation 4 sin^2 A + 2 sin A - 1 = 0
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OpenStudy (primeralph):
This is going to be a little complicated. Ready?
OpenStudy (anonymous):
Complicated??
OpenStudy (primeralph):
@waterineyes I try to assume everyone is a beginner.
OpenStudy (anonymous):
No. I did not mean that.. I mean when you are there, then how it can become Complicated??
OpenStudy (primeralph):
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