Prove the identity. (sin(x) + cos(x))² = 1 + sin(2x)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 61E
icon
Related questions
Question
how do i solve
Prove the identity.
(sin(x) + cos(x))² = 1 + sin(2x)
Expand the product, and use a Pythagorean Identity and a Double-Angle Formula to simplify.
(sin(x) + cos(x))²
=
sin²(x) + 2 sin(x) cos(x) +
= 1 + 2 sin(x)
=
Transcribed Image Text:Prove the identity. (sin(x) + cos(x))² = 1 + sin(2x) Expand the product, and use a Pythagorean Identity and a Double-Angle Formula to simplify. (sin(x) + cos(x))² = sin²(x) + 2 sin(x) cos(x) + = 1 + 2 sin(x) =
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Recommended textbooks for you
Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage