can you solve this “impossible” trig problem? Here is an equation that might look unsolvable, but that is actually possible to solve! For this, you need to use your trig identity cos^2+sin^2=1 to change it to a quadratic equation, and then use the quadratic formula, exponents and logs, and then the unit circle. This is a must see for high school algebra 2 math students, as well as college algebra and precalculus students, and is perfect for math final and exam preparation.

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