SOLUTION: Right triangle. Length of AB is 2.5. Length of BC is 4.5. B is the right angle. Question: What is Angle A? (This question did not come out of the book listed above but is sample

Algebra ->  Angles -> SOLUTION: Right triangle. Length of AB is 2.5. Length of BC is 4.5. B is the right angle. Question: What is Angle A? (This question did not come out of the book listed above but is sample      Log On


   

Question 131054This question is from textbook
: Right triangle. Length of AB is 2.5. Length of BC is 4.5. B is the right angle. Question: What is Angle A?
(This question did not come out of the book listed above but is sample question from a test. The book referenced is a teachers' edition that doesn't go into this kind of detail. But I apparently have to fill in those blanks to get the question posed. Thanks for any help. This question is from textbook

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Let x=measure of angle A

If we draw the triangle, it would look something like this:


To find angle A, we can use trigonometry to do so. We can use the tangent function to find the measure of angle A

Remember


So




Now take the inverse tangent of both sides


Take the inverse tangent of 1.8 to get 60.95



So the measure of angle A is about 60.95 degrees