Identities are "equations" that are always true. For example, the equation sin(x) = cos(x) is true for x = pi/4 + kpi radians where k is any integer [ = 45 + 180k degrees], but for any other value of x the equation is not true. By contrast, the equation sin2(x) + cos2(x) = 1 is true whatever the value of x. This is an identity.
42
No, because 'x' is a variable.
.75/x=.33
The answer will depend on what x is.
18
I find it very interesting.
Whenever an architect makes a line on his bleprint that is not straight or does not lie parallel to the x, y, or z axes, he must use trigonometry to find its length and and the angle it makes with other lines.
If, by trigonometry theorem you mean the "fundamental theorem of trigonometry," sin2(x) + cos2(x) = 1, it is actually the Pythagorean Theorem. if you have a right triangle with a hypotenuse of one, sin(x) is one leg, and cos(x) is the other. The Pythagorean Theorem states that a2 + b2 = c2 and therefore sin2(x) + cos2(x) = 1.
The reciprocal of any function f(x) is 1/f(x) provided that f(x) is non-zero. That applies to all relations in mathematics, not just trigonometry.
180-x...... hahaahahaaa
The length of what?
The formula to find the value of X would be Y-2X. This would equal to y-9 times 2 X.
Identities are "equations" that are always true. For example, the equation sin(x) = cos(x) is true for x = pi/4 + kpi radians where k is any integer [ = 45 + 180k degrees], but for any other value of x the equation is not true. By contrast, the equation sin2(x) + cos2(x) = 1 is true whatever the value of x. This is an identity.
42
No, because 'x' is a variable.
.75/x=.33