3 years ago

How can I find all solutions without unit circle numbers? (ex: sinx= -3/5)

1 answer:

4 0

10sinx-6=0
sinx=6/10=3/5, not negative three out of five.
yo use a calculator' sin3/5=sin0.6, if 0≤x≤2π, x≈37 or 127 (37+90=127, sine is positive in first and second quadrant)

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