Answer:
B.
Step-by-step explanation:
It will be completely symmetrical (a.k.a. Equilateral Triangle) with all 3 angles 60°, whereas a right triangle has one side of 90°.
Answer:
-108
Step-by-step explanation:
36x - 8y² when x = 3 and y = -6
8x=108
=8x(-6)(-6)
-6×(-6)=36
=8x36
=288
108
-<u> 288</u>
-108
Y = 25x + 35
y = 5x + 45
Thus,
25x + 35 = 5x + 45
25x - 5x = 45 - 35
20x = 10
x = 10/20 = 1/2
y = 5x + 45
y = 2.5 + 45
y = 47.5
Thus, x = 1/2, y = 47.5
I forgot my trig but I can see if I can do something
this will be a confusing solution
if we figure out the 3rd angle, it is 55
therefor we has a sideways isocoleese triangle (see attachment)
we can draw an auxilary (imaginary) line from left tower to left side to make 2 identical right triangles with hypotonuse 5 and the angles are 35 and 55
erase all that, and now we have
draw an immaginary line (see attachmen 2) from bottom to top to represent height
I am going to try to find the base (leg)
cos=a/h
cos(70°)=x/5
times both sides by 5
5cos(70°)=x (from left tower to perpendicular line)
now
a²+b²=c²
(5cos(70°)²+h²=5²
25(cos(70°))²+h²=25
minus 25(cos(70°))² both sides
h²=25-25(cos(70°))²
h²=25(1-(cos(70°)²))
square root both sides
h=5√(1-(cos(70°)²)) or 5cos(pi/9)
evaluate with your calculator
h=4.6984km
round
h=4.7km
The correct answer is <u><em>(0,2)</em></u>