Hi Richard P
In the problems you’ve listed you can use the following to calculate the missing angle. The sum of the angles in a Triangle is 180° so when you are given two of the angles in the triangle the missing angle is
180 -(sum of the two given angles)
Then if you have a side opposite one of your angles you can use the Law of Sines to calculate the other sides; The Law of Sines
a/sinA = b/sinB = c/sinC
Since you’ve listed the same type of problem several times please take look at the two problems I worked earlier and use them as examples to work on the other similar ones. Look up the Law of Sines and the sum of the angles in a triangle in your text or online for reference to see how these apply. Remember to draw a diagram.
