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andrew.c
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Homework Statement
I need to solve the equation [tex]cos 5x + cos 3x = cos x[/tex]
Do the first two terms add together to be cos 8x? Then use double angle formula to solve?
andrew.c said:Homework Statement
I need to solve the equation [tex]cos 5x + cos 3x = cos x[/tex]
Do the first two terms add together to be cos 8x? Then use double angle formula to solve?
The six trigonometric functions are sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc).
The trigonometric functions are defined as ratios of the sides of a right triangle. For example, sine is equal to the length of the side opposite the angle divided by the length of the hypotenuse.
The unit circle is a circle with a radius of 1 centered at the origin on a Cartesian coordinate system. It is used to visualize the values of trigonometric functions for any angle. The x-coordinate of a point on the unit circle represents the cosine of the angle, while the y-coordinate represents the sine of the angle.
Trigonometric functions are used in a variety of fields such as engineering, physics, and navigation. They can be used to calculate distances, heights, and angles in real-world scenarios.
Trigonometric functions and inverse trigonometric functions are inverse operations of each other. For example, the inverse of sine is arcsine (sin^-1), which can be used to find the angle when given the ratio of the sides of a right triangle.