Trigonometryhard · Past Paper
In a triangle, if sin^2 A + sin^2 B + sin^2 C = 2, the triangle is:
AEquilateral
BRight-angled
CObtuse
DScalene
✓ Correct Answer: B — Right-angled
This condition sin^2 A + sin^2 B + sin^2 C = 2 implies one angle is 90 degrees.
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