<span>2cos2x/sin2x=cotx-tanx
2cos2x/sin2x = 2(cos²x-sin²x)/(2sinx*cosx) = (2</span>cos²x-2sin²x)/(2sinx*cosx) =
= 2cos²x/(2sinx*cosx) - 2sin²x)/(2sinx*cosx) = cos x/ sin x - sinx/cos x =
= cot x-tan x
Left side is equal to right side, so 2cos2x/sin2x=cotx-tanx is true.
Answer:5842
Step-by-step explanation:do not trust me dude
You need to find out how many pints are in 2,4,6,8 quarts. by the way 1 quart equals 2 pints. so to start you off. 2 quarts would be 4 pints and so on
50 meters
Explanation
you can easily solve this by using a rule of three.
Step 1
Let
x represents the length of the actual lawn
then
the proportion is the same, so
Step 2
so, the length is 50 meters
Find the first rate of change...
(5-6)/(2-0)=(4-5)/(4-2)=(3-4)/6-4)=-1/2
So this equation has a constant velocity which means that it is linear and can be expressed as y=mx+b where m=slope=velocity and b=y-intercept, value of y when x=0...we saw earlier that the velocity or slope is -1/2 so:
y=-x/2+b, and we can use any point to solve for b, I'll use (6,3)
3=-6/3+b
3=-2+b
b=5
So the relationship if the function:
y=-x/2+5 or more neatly...
y=(10-x)/2