Question

For the triangle shown, find the following. (Assume u = v = 19 and w = 28. Round your answers to one decimal place.)

Answer 1

******* I'm looking for steps to help solve the problem, not the answer.

Answer 2

1) Find angle CDA knowing that triangle ACD is 180°
2) Find angle CDB knowing that angle BDA is 180°
3) Find angle CBD with law of sines or with a certain rule of geometry with triangles that have 2 sides equal
4) Find angle BCD knowing that triangle BCD is 180°

Answer 3

i just used ur answer for the 17.5

the triangle has 180 degrees and straight line has 180 degrees so just subtracting numbers from here and there

Answer 4

@AlexUL, wouldn't it be 102.5 by using that info? It is telling me that that answer is wrong. :(

Answer 5

You should get to the right value, which is 85°, using the method I wrote down. Be very careful when I say "angle" or "triangle" the latter includes the sum of 3 angles.
E.G. Triangle ACD = 180° = angle CDA + angle CAD + angle ACD
Also, the "angle BDA" is really just a flat line, so its obviously 180°