sin² 30°-cos45° ×tan60°

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sin² 30°-cos45° ×tan60°
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sin² 30°-cos45° ×tan60°
sin² 30°-cos45° ×tan60°

sin² 30°-cos45° ×tan60°
sin² 30°-cos45° ×tan60°
=1/4-(√2/2)x(√3)
=1/4-√6/2

=1/4-√6/2