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5. Which compound angle expression is equivalent to cos x cosy + sinx siny? sin(x + y) b. sin(x - y) C. cos(x + y) cos(x - y) 6. Using the subtraction formulas for sine and cosine, the compound angle formula for tan(x-y) is tan x + tany tan x-tany tan x + tany b. d. 1-tanxtany 1 + tanxtany 1 + tanxtany a. a. C. d. tanx-tany 1-tanxtany

5. Which compound angle expression is equivalent to cos x cosy + sinx siny? sin(x + y) b. sin(x - y) C. cos(x + y) cos(x - y) 6. Using the subtraction formulas for sine and cosine, the compound angle formula for tan(x-y) is tan x + tany tan x-tany tan x + tany b. d. 1-tanxtany 1 + tanxtany 1 + tanxtany a. a. C. d. tanx-tany 1-tanxtany

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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5. Which compound angle expression is equivalent to cos x cosy + sin x siny? sin(x + y) b. sin(x - y) C. cos(x + y) cos(x - y) 6. Using the subtraction formulas for sine and cosine, the compound angle formula for tan(x−y) is tan x + tany tan x-tany tan x + tany d. b. 1 - tanxtany 1 + tanxtany 1 + tanxtany a. a. C. d. tan x-tany 1- tan x tany
Transcribed Image Text:5. Which compound angle expression is equivalent to cos x cosy + sin x siny? sin(x + y) b. sin(x - y) C. cos(x + y) cos(x - y) 6. Using the subtraction formulas for sine and cosine, the compound angle formula for tan(x−y) is tan x + tany tan x-tany tan x + tany d. b. 1 - tanxtany 1 + tanxtany 1 + tanxtany a. a. C. d. tan x-tany 1- tan x tany
7. Which graph of the following functions does not have vertical asymptotes? y = cotx b. y = tanx C. a. 8. The amplitude of the function y = sinx is 2π b. a. I C. y = sinx 1 d. y = secx d. 2
Transcribed Image Text:7. Which graph of the following functions does not have vertical asymptotes? y = cotx b. y = tanx C. a. 8. The amplitude of the function y = sinx is 2π b. a. I C. y = sinx 1 d. y = secx d. 2
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