Why are significant figures not important when solving problems in your math class

Math classes don't deal with measured values.

Step-by-step explanation:

As a result, all of the numbers are considered to be infinitely precise

CD is approximately 77.55 m

Step-by-step explanation:

I would start by finding the measure of <A using law of cosines

a²=b²+c²-2bc cos A

23²=27²+39²-2(27)(39) cos A

-1721 = -2106 cos A

A =

A = 35.2°

Then I would use law of sines

x/sin 68 = 65/sin 35.2,     x is the length of AC

x = 104.55, then subtract 27 to get the length of CD

CD is approximately 77.55 m