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No, they do not.
0
1 over 3 plus 1 over 12 equals 5 over 12
This is known as the Cosine Rule.
x=1
There is no real significance to sine plus cosine, now sin2(x) + cos2(x) = 1 for any x, where sin2(x) means to take the sign of the number, then square that value.
No, they do not.
It has to be between zero and 2, but the exact value depends on the value of Θ .
Cosine squared theta = 1 + Sine squared theta
It equals 2x. For an exact numerical value, multiply the value of x by 2 to get the result.
0
1 over 3 plus 1 over 12 equals 5 over 12
The value of each angle put into a trigonometric function results in exactly one output value, because that angle represents a single set of x and y coordinates on the ray at the end of the unit circle. Since the trigonometric functions are all defined as the ratio of x and/or y and/or 1, there can only be one output value for each angle. However, the reverse is not true. As an example, tangent is defined as sine over cosine, or y over x. This means that an angle of theta plus 180 degrees generates the same value, because y over x is the same as -y over -x.
This is known as the Cosine Rule.
The answer depends on the value of x.
It is an equation and the value of a is 16
It's an expression, whose exact value depends on the value assigned to "x".