I need to find the points of intersection of sin 2x and sin 4x in degrees. I can do this kind of question but this one is difficult.
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Originally Posted by Stuck Man I need to find the points of intersection of sin 2x and sin 4x in degrees. I can do this kind of question but this one is difficult. Use the identities for sin(4x) and sin(2x) Either , or
Identities of sin 4x aren't part of my course so I should be using the ones usually learned earlier. I can use sin 2x and cos 2x.
I have done it using sin 4x = sin(2x + 2x). It was particularly hard compared to previous questions in the book.
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