Simplify 7a + 3b – 5a + 2b
2 answers:
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Answer:
The lenghts of both legs:
Step-by-step explanation:
By definition, when a triangle has angles that measures 45°, 45° and 90°, its legs are congruent.
Then, knowing the lenght of the hypotenuse, we can find the lenght (in inches) of any leg of the given triangle by applying the Trigonometric Identity :
Finally, simplifying, we get:
means that you are looking for the number that, when multiplied by itself, produces
. That number is
, because
, meaning that
.