B. between 1.5 and 2
is the correct answer.....
HOPE IT HELPS YOU '_'
Answer:
Step-by-step explanation:
Several trig identities are involved in the proof of this. This is the order in which they are used.
- cos(2x) = cos²(x) -sin²(x)
- cos²(x) +sin²(x) = 1
- cos(x) = 1/sec(x)
<h3>Proof</h3>
Starting with the left side, we can transform it into the right side.
If we call the number "x" then:
x*25%=21
x*25/100=21
x=21*4
x=84
Hope this helps. :)
Answer:
Step-by-step explanation:
the formula for circumference of a circle is 2 x pi x r(radius).