Answer:
2.30 is going to be your anwer
Step-by-step explanation:
Answer:
it should be -2/5 or 
Step-by-step explanation:
Answer:
x ≈ 3.4 cm
Step-by-step explanation:
Using the sine ratio in the right triangle
sin57° =
=
( multiply both sides by 4 )
4 × sin57° = x , thus
x ≈ 3.4 cm ( to 1 dec. place )