Answer:

Step-by-step explanation:
Using the Pythagorean identity
sin²x + cos²x = 1, then
sinx = 
Note that (
)² = 
sinΘ = 
=
= 
138/6 = 23 :)
....................
Answer:
d=5,5
r=6,7
Step-by-step explanation:
Answer:
39.4384
Step-by-step explanation:
C= 2(pi)(r)
C=2(3.14)(9)
39.4384=2(3.14)(9)
10 times greater, if u multiply 70,000 by 10, you 'insert a zero' at the end, making it 700,000, 10 moves the decimal left and right one, just depends on if u multiply or divide pls give brainlyist