Posted by sarah a on Thursday, April 15, 2010 at 10:34pm.
a) area = (1/2)(5)(8)sin60
= ..
b) the projection of PQ on PR = 5 cos 60
= ...
c) use the cosine law
QR^2 = 5^2 + 8^2 - 2(5)(8)cos60
= ...
Reiny,help, how do I find the following
(d) Find the sizes of the other two angles of triangle PQR.
(e) Find the length of the median drawn to side PQ.
(f) Find the length of the bisector of angle R.
(g) Find the third side of another triangle that has a 5-inch side, an 8-inch side, and the
same area as triangle PQR
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