Question

Find BDC
A. 75

B. 79

C. 43

D. 41

Answer 1

B. 79.

Explanation:

1. to connect two points C and T with line;

2. m∠ACT=(63/2)° and m∠BTC=(95/2)°, then

3. in ΔCDT m∠CDT=180-(m∠ACT+m∠BTC)=101°;

4. finally, m∠BDC=180-101=79°.

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