document.write( "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. \n" ); document.write( "

Algebra.Com's Answer #317424 by Alan3354(69443) $\"\"$ $\"About$

You can put this solution on YOUR website!
sin(A) = 20/21
\n" ); document.write( "A =~ 72.25 degrees
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