How do you prove one - tan square x divided by one plus tan square xequal to cos two x?
(1 - tan2x)/(1 + tan2x) = (1 - sin2x/cos2x)/(1 + sin2x/cos2x)
= (cos2x - sin2x)/(cos2x + sin2x)
= (cos2x - sin2x)/1 = (cos2x - sin2x) = cos(2x)
If you mean the equation w=xyz, it is a fourth dimensional shape which is a straight line in the planes of xw, yw and zw, a quadratic in the planes w,x=y w,x=z and w,y=z. It also has a monumental saddle point at x=0.....
If you mean what are x y and z on a graph, they are just three mutually perpendicular directions. x might be the length of your box, y its width and z its height for example. You can't draw a graph of 3 dimensions on a piece of paper however.
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "times", "equals", "squared" etc.
If x2 plus 6x equals 27 what is the value of x?
x2 +6x = 27
x2 + 6x - 27 = 0
x2 + 9x - 3x - 27 = 0
x(x + 9) - 3(x + 9) =0
(x - 3)(x + 9) = 0
So x can equal 3 or -9.
How do you solve this equation 0.3x equals 2.4?
0.3x = 2.4
Multiply each side by 10:
3x = 24
Divide each side by 3:
x = 8
Are the function F of x equals -2over 3 plus 1 and determine the slope explain?
The function that is given has a constant value and therefore, its slope is 0.
How do you solve 3x-7 equals 5x plus 3?
First you subtract 3x from both sides and get -7=2x+3. Then subtract 3 from both sides and get -10=2x. Then divide both sides by 2 and x=-5.
How do you solve X over 2 plus 3 equals 4?
x/2+3=4
x/2=1 (take away 3 from both sides)
x=2 (multiply both sides by two)
The simplistic solution is as follows:
The component of the force in the horizontal plane is 41.8*cos(25) = 37.9 N.
The distance travelled is pi*18 metres so work done = 37.9*18 = 2142 Joules.
Largest volume of a cylinder inscribed in a cone of semivertical angle x?
(4/27)*pi*R3*tan(x)
R being the radius of the base of the cone.
What is the slope of a curve where x equals n to the y power?
if the x equals -1.2 and the y is -4, 4 what is the slope
How can you tell if a porabola is opening up or down using ax2 plus bx plus c?
If a is positive, then the parabola opens upwards; if negative, then it opens downwards.
What is the rule if x is 80 and y is 1?
There are infinitely many rules. SOme of these are:
y = x/80
y = 80/x
y = x + 79
y = 81 - x
y = sqrt(x+1) - 8
Solving 2x plus y equals 10 and y equals x-5 subtitution?
2x+x-5 = 10
2x+x = 10+5
3x = 15
x = 5 and y = 0