I am trying to understand how to solve the equation
$$2\sin^2x + 3\sin x + 1 = 0.$$
Please give hints.
change the tone slightly
solve this for
show the steps
Hint: Let $y=\sin x$. Solve for $y$ first, then solve for $x$.
Just treat $\sin x$ as a variable, and solve the polynomial.
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3 years ago