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artcher [175]
3 years ago
11

Line BD is tangent to a circle with diameter AB. Explain why the measure of angle BCA must equal the measure of angle ABD.

Mathematics
1 answer:
Lana71 [14]3 years ago
6 0

Answer:

This is because angles inscribed in a semicircles are 90 degrees (BCA)

The tanget of that circle is also a 90 degree angle to the diameter (ABD)

Therefore they're both 90 degrees

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Yuki888 [10]

Answer:

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Step-by-step explanation:

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In this case:

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