Answer:
It is 4...........
Step-by-step explanation:
Hope this helps.
Answer:
A. 60°
Step-by-step explanation:
3tan^3 x= tan x
3tan^2x = 1
tan^2 x = 1/3
tan x = 1/![\sqrt{3\\}](https://tex.z-dn.net/?f=%5Csqrt%7B3%5C%5C%7D)
x = 60°
A = √1² + 2²
a = √1 + 4
a = √5
a ≈ 2.23
b = 4
c = √3² + 2²
c = √9 + 4
c = √13
c ≈ 3.6
P = a + b + c
P = 2.23 + 4 + 3.6
P = 6.23 + 3.6
P = 9.83
Perimeter of ΔBDE = 9.83 units
X+6=y
Y^2-x^2=84
So substitute.
Y^2-x^2=84
(X+6)^2-x^2=84
X^2+12x+36-x^2=84
12x+36=84
12x=48
X=4
So then use this value to find y by substituting.
X+6=y
4+6=y
10=y