Need math help with an angle in a right triangle

Mathematics
Tutor: None Selected Time limit: 1 Day

Dec 10th, 2015

Thank you for the opportunity to help you with your question!

This can be easily calculated by Pythagoras theorem

it says that AB^2=AC^2+ BC^2

                  AB=sqrt(15^2+20^2)

                      =sqrt(225+400)

                      =sqrt(625)

                       =25cm 

Please let me know if you need any clarification. I'm always happy to answer your questions.
Dec 10th, 2015

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