cos45°sin²30°+2分之根号2sin²60°

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cos45°sin²30°+2分之根号2sin²60°

cos45°sin²30°+2分之根号2sin²60°
cos45°sin²30°+2分之根号2sin²60°

cos45°sin²30°+2分之根号2sin²60°
cos45°sin²30°+2分之根号2sin²60°
=√2/2×1/4+√2/2 ×3/4
=√2/2×(1/4+3/4)
=√2/2×1
=√2/2

原式=√2/2×1/4+√2×3/4/2
=√2/8+3√3/8
=√3/2.