Step-by-step explanation:

Solve b part yourself in the same way.
Answer:
−0.965925826289068
Step-by-step explanation:
sin 255 = −0.965925826289068
Answer:
The answer is 25 cm.
Step-by-step explanation:
4 = 2/4u
Multiply both sides by 4u
16u = 2
Divide both sides by 16, and simplify.
u = 1/8