Respuesta :
and 1%2F5 are opposite signed reciprocals, that is,
their product is -5·1%2F5 = -1.
So PQ and QR are perpendicular, so angle Q is 90°
Edwin
their product is -5·1%2F5 = -1.
So PQ and QR are perpendicular, so angle Q is 90°
Edwin