Find the angles of a right-angled triangle if one of them is: a) 30 °; b) 45 °; c) 70 °.
| September 21, 2021 | education
a)
Let’s find out what the unknown acute angle of our geometric figure will be if the known angle is 30 °:
90 – 30 = 60.
Answer: The unknown angle is 60 °.
b)
Let’s find out what the unknown acute angle of our geometric figure will be if the known angle is 45 °:
90 – 45 = 45.
Answer: The unknown angle will be 45 °.
c)
Let’s find out what the unknown acute angle of our geometric figure will be if the known angle is 70 °:
90 – 70 = 20.
Answer: The unknown angle will be 20 °.
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