Sin 20° · sin 40° · sin 80° = 1/2 ( cos 20° - cos 60° ) · sin 80° =
= 1/2 ( cos 20° sin 80° - cos 60° sin 80° ) =
= 1/2 ( (sin 100° + sin 60°)/2 - 1/2 sin 80° )= ( sin 100° = sin 80° )
= 1/2 · ( 1/2 sin 60° ) = 1/4 sin 60° = √3 / 8
sin 60° = √ 3/2
√ 3 / 2 · √ 3 / 8 = 3/16 ( correct )
Answer:
He should have drunk 28 gallons in 7 days
Step-by-step explanation:
This is pretty simple, so let's assume he drank 4 galloiljs of water a day. 4 gallons a day x 7 days
4*7
that is 28
Answer:
Discriminant is 60
Step-by-step explanation:
the discriminant of 
To find discriminant , first we write the equation in the form of
Subtract 2 on both sides
a=3, b=6, c=-2
Formula for discriminant is 
Plug in the values
Discriminant is 60
Answer:
x = 2
Step-by-step explanation:
x = 7 is a vertical line parallel to the y- axis.
Thus a parallel line will also be vertical with equation
x = c
where c is the value of the x- coordinates the line passes through.
The line passes through (2, - 5) with x- coordinate 2, thus
x = 2 ← equation of parallel line
Answer D
use photomath and sub to pewdiepie
