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Home Q & A Board Science-Related Homework Help Mathematics
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troy.clements troy.clements
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10 years ago
I know it has something to do with tangent, cosine, or sine. However I'm not sure it works exactly.

The two sides are 16 and 16. The one angle is 40 degrees.
the pyth. theorem won't work because this is an isosceles triangle not a rt triangle. sorry
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wrote...
#1
10 years ago
16 to the 2nd power +16 to the 2nd power= 3rd side to the 2nd power, find square root.

Pythagorean theory
wrote...
#2
10 years ago
use law of cosines, or turn it into two right triangles by drawing a line down the middle (since two sides are the same, its isocoles, and you can do this)  solve for edge (not height) using SOH CAH TOA and multiply by two (there are two of them)
wrote...
#3
10 years ago
pythagorean theorem applies only to right triangles;
else, cosine law is more appropriate;
c^2 = a^2 + b^2 - 2abcos(C)
in your example, a and b are known as well as angle C
assuming that angle C is the opposite angle of c, then you may use the above formula
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