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andrew-mc [135]
2 years ago
15

Please help me 1. 2. 3. Or 4. Ineedit

Mathematics
1 answer:
blagie [28]2 years ago
7 0

Answer:

4

Step-by-step explanation:

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Step-by-step explanation:

Since, CD is an altitude, ∠CDB will be a right angle.

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By applying triangle sum theorem in ΔABC,

m∠CAB + m∠CBA + m∠ACB = 180°

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