The trigonometric identity you've provided is known as the "Pythagorean Trigonometric Identity." It states that for any angle "x":
cos²x + cos²(2x) + cos²(3x) = 1
This identity is a special case of the more general Pythagorean Trigonometric Identity, which relates the squares of the trigonometric functions of an angle in a right triangle:
sin²θ + cos²θ = 1
Feel free to use this identity in trigonometric calculations and equations involving these cosine values.
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The trigonometric identity you've provided is known as the "Pythagorean Trigonometric Identity." It states that for any angle "x":
cos²x + cos²(2x) + cos²(3x) = 1
This identity is a special case of the more general Pythagorean Trigonometric Identity, which relates the squares of the trigonometric functions of an angle in a right triangle:
sin²θ + cos²θ = 1
Feel free to use this identity in trigonometric calculations and equations involving these cosine values.