OpenStax, Algebra and Trigonometry 2e §9.2 Sum and Difference Identities · Exercise 33 · Trigonometry · Compound & multiple angles

Sum and Difference Identities · Exercise 33

Use a graph to determine whether the functions are the same or different. If they are the same, show why. If they are different, replace the second function with one that is identical to the first. (Hint: think $2 x = x + x .$ )

$f (x) = s in (4 x) - s in (3 x) cos x, g (x) = s in x cos (3 x)$

~8 minWritten answer · compare with the solution

OpenStax, Algebra and Trigonometry 2e · §9.2 Sum and Difference Identities · Exercise 33

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