In the diagram below, BC is an altitude of AABD. To the nearest whole unit, what is the length of CD?
B
30
A
O
16ο
Α. 52
Β. 58
C, 44
D. 56

56

Step-by-step explanation:

Let CD = x  and BD = y

In triangle ABC   by the Pythagorean theorem.

So

Now in triangle ABD

by the Pythagorean theorem

and in triangle ACD    by the Pythagorean theorem

Now

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1,918

step-by-step explanation: