9514 1404 393
Answer:
x ≈ 32.4
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you of the relation between angle, adjacent side, and hypotenuse:
Cos = Adjacent/Hypotenuse
cos(72°) = 10/x
x = 10/cos(72°)
x ≈ 32.4
so 40 * 80 = 3,200
4 * 8 = 32
Then add the two 0's to the end
so 3,200
The compatible number to 231 is I think is 30
Answer:
x=1/3
Step-by-step explanation:
10x = x+3
9x=3
x=1/3
