Answer:
tanA = ![\frac{\sqrt{11} }{7}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B11%7D%20%7D%7B7%7D)
Step-by-step explanation:
Before obtaining tanA we require to find EF
Using Pythagoras' identity in the right triangle.
EF² = DF² - DE² = (
)² - 7² = 60 - 49 = 11 ( take square root of both sides )
EF = ![\sqrt{11](https://tex.z-dn.net/?f=%5Csqrt%7B11)
Then
tanA =
=
= ![\frac{\sqrt{11} }{7}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B11%7D%20%7D%7B7%7D)
The answer you are looking for here is 22.
Answer:
x=25
Step-by-step explanation:
Assuming you meant 3x = 75 what you want to do is isolate x. To isolate x you want to work backward. Since it is 3 times x you want to divide each side by 3 to get x on its own.
(3x)/3 = (75)/3
When you divide 3 and 3 you get one. 1x is represented by just an x so x=25.
Distribute the 2 into the parenthesis ...
2x(10)