Exercise 4.3.24. (a) Using de Moivre's formula for 23 where z = cis 0, find formulas for cos 30 and sin 30 in terms of cos 0 and sin 0. (*Hint*) (b) Using part (a), find a formula for cos 30 in terms of cos 0. (*Hint*) "There are other types of "morphisms" as well, such as homeomorphism (in topology), diffeomorphism (in differential topology), and just plain morphism (in category theory).
Exercise 4.3.24. (a) Using de Moivre's formula for 23 where z = cis 0, find formulas for cos 30 and sin 30 in terms of cos 0 and sin 0. (*Hint*) (b) Using part (a), find a formula for cos 30 in terms of cos 0. (*Hint*) "There are other types of "morphisms" as well, such as homeomorphism (in topology), diffeomorphism (in differential topology), and just plain morphism (in category theory).
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 72E
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