Angle CFE and angle FCD are alternate interior angles (saw this question before that included the transversal as well)
Answer:
cos60° = 
Step-by-step explanation:
Using the cofunction identity
• cos(90 - x)° = sinx°, hence
sin30° = cos(90 - 30)° = cos60° = 
Answer:
density = 5 g/ml
Step-by-step explanation:
d=m/v
d= 100/20
Just find 80% of 60 players: 0.80(60 players) = 48 players are rt. handed.