SOLUTION: Given triangle ABC and side a = 20; side b = 21. Find the measurement of angle A if angle B is a right angle. I need the answer and steps to this problem so I can use it to answ

SOLUTION: Given triangle ABC and side a = 20; side b = 21. Find the measurement of angle A if angle B is a right angle. I need the answer and steps to this problem so I can use it to answ

Algebra.Com

Question 463288: Given triangle ABC and side a = 20; side b = 21. Find the measurement of angle A if angle B is a right angle. I need the answer and steps to this problem so I can use it to answer the rest of them. Thank you.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
sin(A) = 20/21
A =~ 72.25 degrees

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