Answer:
hope this helpful
Step-by-step explanation:
isosceles right
because A light ray incident at 90° at the first face emerges at the same angle. The diagram shows five isosceles right-angled prisms. A light ray incident at 90° at the first face emerges at the same angle with the normal from the last face.
Y/3=12 should be y=63 because 63/3=12
Answer:
Step-by-step explanation:
find attached the solution
Answer:
f=5
Step-by-step explanation:
4(f-3)=20 distribute
4f-12=20 add
4f-12+12=20+12... 4f=32 divide
4f/4=20/4..... f=5