0
Solve sin² x = sin x.
The answer is
x = 0 or π/2 or π.
Here's how you can find this result:
Let s = sin x.
Then, we have,
s² - s = 0; whence,
s(s - 1) = 0.
Now, when the product of two numbers is zero, then one or other of them must equal zero.
Hence, either,
s = 0
OR
s - 1 = 0; that is,
sin x = 1 or 0.
For 0 ≤ x < 360°,
x = 0° or 90° or 180°;
those being the only angles whose sine equals either 1 or 0.
In term of radian measure, x = 0 or π/2 or π.
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What does 1 - cos squared equal?
Note that an angle should always be specified - for example, 1 - cos square x. Due to the Pythagorean formula, this can be simplified as sin square x. Note that sin square x is a shortcut of (sin x) squared.
What is Cos squared x equal to?
Cos^2 x = 1 - sin^2 x
Does sin squared x plus cos squared x equal 1?
Yes. 'sin2x + cos2x = 1' is one of the most basic identities in trigonometry.
What is Sin squared x - Cos squared x divided by 1 - Tan squared x equals cos squared x?
22
What does Sin squared x Cos squared x equal?
sin2 x = (1/2)(1 - cos 2x) cos2 x = (1/2)(1 + cos 2x) Multiplying both you get (1/4) (1 - cos2 2x) Which is equal to (1/4) (1 - (1/2) (1 + cos 4x) = (1/8) (2 - 1 - cos 4x) = (1/8) (1 - cos 4x) Or If it is the trigonomic function, sin squared x and cosine squared x is equal to one
