Mrfootballman97
Can anyone please help me understand how to do this problem? I will give medals and become fans if you do.



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Mrfootballman97
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dw:1358735725040:dw

Mrfootballman97
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Given: Angle ACB is a right angle; D, E, and F are the midpoints of Seg. AB, BC, and CA. Find CD, EF, ED. Please help me understand how to do this

zordoloom
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Mrfootballman97
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What is the law of sines? How do i find EF and CD?

zordoloom
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Sorry, I didn't realize you don't know trig. In this case, use the Pythagorean theorm

zordoloom
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dw:1358736683020:dw

zordoloom
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So, Side ED is 5 units long

zordoloom
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FE would be 13.

zordoloom
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and DC would be 13

zordoloom
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Or, you could have used proportions. Since every triangle is the midpoint of another.

Mrfootballman97
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Thanks Man! Now how would i find out this problem: If the measureof angle B is 23, find the measure of angle DCB

zordoloom
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dw:1358736914508:dw

Mrfootballman97
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I just need to find the measure of angle DCB

zordoloom
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From what triangle?

Mrfootballman97
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CDB

zordoloom
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That angle would be 22.89

zordoloom
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But since you don't know trig, I don't know how to explain this to you using any ordinary method.

Mrfootballman97
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Ok. Well thanks man you saved me tonight.