Write the right side of the identity as one fraction with the same denominator
negative y−y.
...
Mathematics, 05.11.2020 18:50, merunikitty1226
Write the right side of the identity as one fraction with the same denominator
negative y−y.
Rewrite the numerator and the denominator separately. Distribute the terms of the numerator. Do not apply any trigonometric identities yet.
(cos (x-y)-cos x)/-y = cos x ((cos y -1)/(-y)) + sin x ((sin y)/(-y))
Answers: 2
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