Trigonometric Ratios from Right Triangle Similarity · Geometry · Varsity Tutors

Geometry Quiz

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THEOREMS INVOLVING SIMILARITY

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In right triangle

ABC

, the right angle is at

C

, and the altitude from

C

meets

\overline{AB}

at point

D

. If

AD = 4

and

DB = 9

, what is the value of

\sin(\angle A)

?

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