Answer with explanation:
It is given that
The Angle lies in Second Quadrant.
Formula to find reference Angle
→If Angle lies in first Quadrant
then Reference Angle = The Angle given
→If Angle lies in Second Quadrant
Then Reference Angle = 180° - Angle
→If Angle lies in third Quadrant
then Reference Angle = Angle - 180°
→If Angle lies in fourth Quadrant
Then Reference Angle = 360° -Angle
Reference Angle
⇒sin 48°=0.7431448
Rounding to four decimal places
Sin 48°=0.7432