Find the measure of the indicated angle. (Round to 2 decimal places if necessary)
9
?
21

To answer this, since the hypotenuse is given, whichever side 9 is you will square it and take it away so c^2-a^2=b^2 9 squared + 21 squared = 360 the square root of 360 would be 18.9 which you can round to 19 hope this helps!