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Marizza181 [45]
3 years ago
6

Trigonometric identities

Mathematics
1 answer:
Goryan [66]3 years ago
7 0

Without knowing what Juan's exact steps were, it's hard to say what he did wrong. The least you could say is that his solution is simply not correct.

4 sin²(<em>θ</em>) - 1 = 0

==>   sin²(<em>θ</em>) = 1/4

==>   sin(<em>θ</em>) = ±1/√2

==>   <em>θ</em> = <em>π</em>/4, 3<em>π</em>/4, 5<em>π</em>/4, 7<em>π</em>/4

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