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
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Related questions
Question
Pls help ASAP on both

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

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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