A few days ago
Check answers?
Okay, so I’ve just finished doing this problem http://img122.imageshack.us/img122/8527/picture319ur8.jpg
I’m not sure if my answers are right, so can someone check?
a)30 degrees
b)120 degrees
c)30 degrees
d)30 degrees
e)60 degrees
f)10
g)5 radical 3
h)10
i)10 radical 3
j) 15
Top 1 Answers
A few days ago
Favorite Answer
Those are all numerically correct, but as the one length given is in yards, I would add the units to all your lengths.
In triangle CDB:
Angle BCD = 90deg – angle BDC.
CB = 5tan(60) = 5sqrt(3).
In triangle ACD:
As AD = CD, angles DAC and DCA are half the 60deg exterior angle BDC, making them 30deg each.
A couple of applications of Pythagoras yield the remaining lengths.
This commentary is to convince you I have looked at the diagram and checked things out.
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