Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 13, Trigonometric Ratios and Functions - Prerequisite Skills - Page 850: 11


$x=45$ Special note: We don't put x degrees because the problem states x as a number, not as a measure.

Work Step by Step

The sum of the angles of a triangle is 180 degrees. We can write an equation to match that. $x+x+90=180$ Subtracting 90 from both sides then dividing by 2, $x=45$
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