angle at a straight line is =180
4+5+x=180
let x be angle at the tower
9+x=180
x=180-9
x=171°
and x is divide in to two then is 2x
there for
2x=171°
x=171/2
x=85.5°
then sin85.5°= 90/y
let y be the unknown feet
0.9969=90/y
y0.9969=90
y=90/0.9969
y=90.3ft.
Answer:
i think its b
Step-by-step explanation:
His reasoning is not valid because they might actually appear to be equal to his sight, but should he measure them they might not exactly be.
So he just can't look at it and conclude. He can say it is equilateral if each angles measures 60 degrees.
Simplifying
8(x + 3) + -2x
Reorder the terms:
8(3 + x) + -2x
(3 * 8 + x * 8) + -2x
(24 + 8x) + -2x
Combine like terms: 8x + -2x = 6x
24 + 6x
Answer:
Step-by-step explanation: