Geometryeasy · Past Paper
In a right-angled triangle, if one acute angle is 40 degrees, find the other acute angle.
A40 degrees
B50 degrees
C90 degrees
D140 degrees
✓ Correct Answer: B — 50 degrees
The two acute angles in a right triangle must be complementary (sum to 90). 90 - 40 = 50 degrees.
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