Answer:

Step-by-step explanation:
Using the Pythagorean identity
sin²x + cos²x = 1, then
sinx = 
Note that (
)² = 
sinΘ = 
=
= 
Answer:0.06
Step-by-step explanation: just pretty obvious
1/2=x/20
times both sides by 20
20/2=x
10=x
answer is 10/20
The decimal equivalent of 3/10 is .3
Answer:550(N)
Step-by-step explanation: