4x? )(i) Use the substitution x= tan e to show that sin? 20 dx. %3D (1+x*)' 4x2 (ii) Hence find in simplest exact form the value of

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.5: Product-to-sum And Sum-to-product Formulas
Problem 33E
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(d)(i) Use the substitution x= tan e to show that
4x²
sin 20 dx.
(1+x)'
3.
(ii) Hence find in simplest exact form the value of
4x²
dx .
(1+x*)
Transcribed Image Text:(d)(i) Use the substitution x= tan e to show that 4x² sin 20 dx. (1+x)' 3. (ii) Hence find in simplest exact form the value of 4x² dx . (1+x*)
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