SOLUTION: a right angled triangle has an angle 90 degree and another is seventy degree what is third angle

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Question 952768: a right angled triangle has an angle 90 degree and another is seventy degree what is third angle
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
Sum of angles in a triangle=180 degrees.
A=first angle=90 degrees; B=second angle=70 degrees; C=third angle
A+B+C=180 degrees
90 degrees+70degrees+C=180 degrees
160degrees+C=180 degrees Subtract 160 degrees from each side.
C=20 degrees ANSWER: The third angle is 20 degrees.