A ray of light is incident on a glass slab making an angle of 60° with the surface. Calculate the angle of refraction in glass if the refractive index of glass is 1.5 1) sin-'(1/3)
2) 30°
3) 45°
4) 50°

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)

Solve 17= -13 - 8x and show your work.