Loannis Diamantis Question 23 - 4 Points
Apr 25, 1:22:52 PM
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Triangle ABC is similar to triangle DEF. Find the measure of side DE. Round your
answer to the nearest tenth if necessary.
8
с
B
F
31
E
13.7
A
D

Maybe the answer is 20mm. all i really did was just multiply, which is obvious.

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.