A few days ago
Micky

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
Anonymous

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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