dentities dentities for any angle for which the functie // use Half-angie identy identy to kind...

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Answer 1

Answer #1

let, tann = tan 67.5 Apply the trigonometry identity taan= 2 tank l-tan²x tan (67.5x2) = 2 tann or, - 1 T-ten²x or tan +35 =

Answer 2

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