according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.
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1/5 i hope this
Answer from: Quest
they charge the same amount at 20 minutes.
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Mathematics, 21.06.2019 17:00
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