U Given A B C and point D not collinear with A B and C Figure 5 17 Prove that AB BC Figure 5 17 AD sin CD sin ADB CDB AC AD sin

Question

U Given A B C and point D not collinear with A B and C Figure 5 17 Prove that AB BC Figure 5 17 AD sin CD sin ADB CDB AC AD sin ADC BC BD sin XBDC Hint Use the law of sines to compute AB AD CD BC and BD BC and remember that sin ABD sin CBD B

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