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单选题
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1.在三角形ABC中,若∠A=60°,∠B=45°,BC=,则AC=()
A:
B:
C:
D:
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  • 提示2IHNpbkE9c2luNjDCsD08aW1nIHdpZHRoPTEyIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzQ2LzI2L3JCQUNGRlE3b1o3QXlLSWFBQUFCWUFKbmNPVTQ3OC5wbmciPu+8jHNpbkI9c2luNDXCsD08aW1nIHdpZHRoPTEyIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzAyL0JCL3JCQUNKMVE3b1o2Z2ZweExBQUFCVXRQVTYwWTIwMi5wbmciPu+8jEJDPTxpbWcgd2lkdGg9MjUgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMDIvQkIvckJBQ0oxUTdvWjJ6d3MwT0FBQUJsRFczN1h3NDc2LnBuZyI+