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SOLVED: Investigation TION B ESTION 2 2.1 Now let us investigate whether the identity of cos (α-β)=cosαcosβ+sinαsinβ is true for all values of α and β. Let P(cosα ; sinα) and Q(cosβ ;
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gives the values of those used trigonometric functions for cos (θ) = v/c | Download Table
If `sin^(-1)x+sin^(-1)y=(2pi)/3`, then `cos^(-1)x+cos^(-1)y` is equal to - YouTube
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![Formula of Trigonometry - [Sin, Cos, Tan, Cot, Sec & Cosec]](https://trigidentities.net/wp-content/uploads/2020/06/Screenshot-2020-06-03-at-6.49.12-PM.png "Formula of Trigonometry - [Sin, Cos, Tan, Cot, Sec & Cosec]")
Formula of Trigonometry - [Sin, Cos, Tan, Cot, Sec & Cosec]
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