Trigonometry Identities: sin(x +/- y) = sin(x)cos(y) +/- cos(x)sin(y)

First published at 19:11 UTC on May 8th, 2023.
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In this video I use the cos(x - y) identity which I proved in my earlier video to derive a very useful trigonometric identity for sin(x + y) and sin(x -y).

Download the notes in my video: https://1drv.ms/b/s!As32ynv0LoaIid4le5eHtdGQmz0tBg?e=xHVarf…

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CategoryEducation
SensitivityNormal - Content that is suitable for ages 16 and over
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