7 cos(x) · 7 cos(x) 1- tan(x) 7 sin(x) cos(x) sin(x) – cos(x)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.3: Trigonometric Functions Of Real Numbers
Problem 43E
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Verify the identity algebraically. Use the table feature of a graphing utility to check your result numerically. (Simplify at each step.)
7 cos(x)
1 – tan(x)
7 sin(x) cos(x)
sin(x) – cos(x)
7 cos(x) –
7 cos(x)
1 – tan(x)
(7 cos(x))(
- 7 cos(x)
7 cos(x) –
1 – tan(x)
(-7 cos(x)(
1 – tan(x)
(-7 cos(x))
cos(x)'
| cOS(x))
cos(x)
1 -
cos(x)
(-7 cos(x))(|
cos(x) – sin(x)
7 sin(x) cos(x)
sin(x) – cos(x)
Transcribed Image Text:Verify the identity algebraically. Use the table feature of a graphing utility to check your result numerically. (Simplify at each step.) 7 cos(x) 1 – tan(x) 7 sin(x) cos(x) sin(x) – cos(x) 7 cos(x) – 7 cos(x) 1 – tan(x) (7 cos(x))( - 7 cos(x) 7 cos(x) – 1 – tan(x) (-7 cos(x)( 1 – tan(x) (-7 cos(x)) cos(x)' | cOS(x)) cos(x) 1 - cos(x) (-7 cos(x))(| cos(x) – sin(x) 7 sin(x) cos(x) sin(x) – cos(x)
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