Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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4.1 Trigonometric Functions Devise a test to demonstrate the validity of the following common trigonometric formulas. What values of A and B should be used to test these functions thoroughly? a. sin(A + B) sin(A)cos(B)+cos(A)sin(B) b. sin(24) 2sin(A)cos(4) 1/2-1/cos(24) c. sin(4) Note: In Excel, sin (A) should be entered as (sin(A)) This causes sin(A) to be evaluated first and that result to be squared.
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Transcribed Image Text:4.1 Trigonometric Functions Devise a test to demonstrate the validity of the following common trigonometric formulas. What values of A and B should be used to test these functions thoroughly? a. sin(A + B) sin(A)cos(B)+cos(A)sin(B) b. sin(24) 2sin(A)cos(4) 1/2-1/cos(24) c. sin(4) Note: In Excel, sin (A) should be entered as (sin(A)) This causes sin(A) to be evaluated first and that result to be squared.
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Step 1: Introducction
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Step 2: Validity of first trigonometric identity
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Step 3: Validity of second identity
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Step 4: Validity of third identity
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