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✨ Best Answer ✨

sinθ×sinθ/cosθ=−3/2
両辺に2をかける
2×sinθ×sinθ/cosθ=−3
整理して
2sin^2θ/cosθ=−3
両辺にcosθをかける
2sin^2θ=−3cosθ

ほい

ありがとうございます!

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