Solving trigonometric equations using pythagorean identities

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Solving trigonometric equations using pythagorean identities

Basic concepts: Reference angle, Find the exact value of trigonometric ratios, ASTC rule in trigonometry (All Students Take Calculus), Pythagorean identities,

Lessons

1.
Utilizing "Pythagorean Identities" to solve:

$2\cos^2x + 3\sin x - 3 = 0$
$0 \leq x$ < $2\pi$

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