Answer:
First option
x = 9.1, AB = 16.5, CD = 14.1
Step-by-step explanation:
5 * x = 13 * 3.5
5x = 45.5
x = 9.1
AB = 3.5 + 13 = 16.5
CD = 5 + 9.1 = 14.1
Answer:
no entiendo nada
Step-by-step explanation:
Answer:
lol
Step-by-step explanation:
I'm the first person!
LOL it's been so long since nobody answered this question lol
cos(2π/15) cos(4π/15) cos(8π/15) cos(14π/15) <span>
= cos(2π/15) cos(4π/15) cos(8π/15) cos(π – (π/15))
= cos(2π/15) cos(4π/15) cos(8π/15) * -cos(π/15)
= -cos(π/15) cos(2π/15) cos(4π/15) cos(8π/15)
= -16sin(π/15) cos(π/15) cos(2π/15) cos(4π/15) cos(8π/15) / [
16 sin(π/15) ]
= -8 * [ 2sin(π/15) cos(π/15) ] cos(2π/15) cos(4π/15)
cos(8π/15) / [ 16 sin(π/15) ]
= -8 sin(2π/15) cos(2π/15) cos(4π/15) cos(8π/15) / [ 16
sin(π/15) ]
= -4 * [ 2 sin(2π/15) cos(2π/15) ] cos(4π/15) cos(8π/15) / [
16 sin(π/15) ]
= -4 sin(4π/15) cos(4π/15) cos(8π/15) / [ 16 sin(π/15) ]
= -2 * [2 sin(4π/15) cos(4π/15) ] cos(8π/15) / [ 16 sin(π/15)
]
= -2 sin(8π/15) cos(8π/15) / [ 16 sin(π/15) ]
= -sin(16π/15) / [ 16 sin(π/15) ]
= -sin(π + π/15) / [ 16 sin(π/15) ]
= -1 * -sin(π/15) / [ 16 sin(π/15) ]
<span>= 1/16</span></span>
Answer:
-1/5
Step-by-step explanation:
Perpendicular lines have slopes that are the opposite reciprocal of one another.
The slope of line t is the opposite reciprocal of the slope of line s:
slope of t = -1/(slope of s)
slope of t = -1/5