In a right-angled triangle, one angle is 78 degrees greater than the other, find the second angle.
| November 29, 2020 | education
first corner – x
second angle – x + 78 °
third angle = 90 °
the sum of the angles of a triangle is 180 °
hence;
x + x + 70 ° + 90 ° = 180 °;
2x = 180 ° -70 ° -90 °;
2x = 20 °
x = 10 ° – first angle
10 + 78 ° = 88 ° – second angle
Answer: 88 ° second angle
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