The double-angle identities are used when we want to simplify a trig expression. Similarly, you can use the half-angle identities to simplify trig expressions. These identities are also useful in engineering and physics concepts. sin(2a)=2sin(a)cos(a) cos(2a)=1-2sin^2(a) Use your knowledge of the half-angle and double-angle identities to simplify the following: (4sin(2a))-(2sin(2a))(4sin^2(a))
The double-angle identities are used when we want to simplify a trig expression. Similarly, you can use the half-angle identities to simplify trig expressions. These identities are also useful in engineering and physics concepts. sin(2a)=2sin(a)cos(a) cos(2a)=1-2sin^2(a) Use your knowledge of the half-angle and double-angle identities to simplify the following: (4sin(2a))-(2sin(2a))(4sin^2(a))
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 2E
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You learned the double
cos(2a)=1-2sin^2(a)
Use your knowledge of the half-angle and double-angle identities to simplify the following:
(4sin(2a))-(2sin(2a))(4sin^2(a))
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