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Hi,  Any help to understand how to solve questions 1,2 and 3 would be appreciated. x1=2.85sin (100πt+2π/7)                          x2=4.35sin (100πt-2π/5 ) 1. Use the compound angle formulae to expand x1 and x2 into the form   Asin 100πt ±Bcos 100πt , where A and B are numbers to be found. 2. Using your answers for x1 and x2 from part 1 above, express x1+x2 in a similar format. 3. Convert this expression for x1 and x2 into the equivalent form Rsin (100πt+α).

Hi,  Any help to understand how to solve questions 1,2 and 3 would be appreciated. x1=2.85sin (100πt+2π/7)                          x2=4.35sin (100πt-2π/5 ) 1. Use the compound angle formulae to expand x1 and x2 into the form   Asin 100πt ±Bcos 100πt , where A and B are numbers to be found. 2. Using your answers for x1 and x2 from part 1 above, express x1+x2 in a similar format. 3. Convert this expression for x1 and x2 into the equivalent form Rsin (100πt+α).

Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter1: The Six Trigonometric Functions
Section: Chapter Questions
Problem 2GP
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Hi, 

Any help to understand how to solve questions 1,2 and 3 would be appreciated.

x1=2.85sin (100πt+2π/7)                         

x2=4.35sin (100πt-2π/5 )

1. Use the compound angle formulae to expand x1 and x2 into the form   Asin 100πt ±Bcos 100πt , where A and B are numbers to be found.

2. Using your answers for x1 and x2 from part 1 above, express x1+x2 in a similar format.

3. Convert this expression for x1 and x2 into the equivalent form Rsin (100πt+α).

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