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sweet [91]
3 years ago
15

I am just completely lost and am unsure of how to approach this problem.

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0

Answer:

68°

Step-by-step explanation:

As BA⊥BD, so ∠ABD = 90°

also, ∠ABD = ∠CBD + ∠ABC

⇒ 90° = 4x + 52° + 8x - 10°

⇒  12x = 48°

⇒  x = 4°

now,

∠CBD = 4x + 52°

          = 4(4°) + 52°

          = 68°

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