Verify the identity. 7 tan x + 5 tan y 1 - tan x tan y 5 cot x + 7 cot y cot x cot y - 1 7 7 tan x + 5 tan y cot x + cot y %3D 1 - tan x tan y 1 1.. 1 cot x cot y 7 cot y + %3D cot x• cot y cot x · cot y – 1 cot x cot y 5 cot x + 7 cot y_ cot x cot y – 1 %3D

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.3: Trigonometric Functions Of Real Numbers
Problem 44E
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Verify the identity.
7 tan x + 5 tan y
1 - tan x tan y
5 cot x + 7 cot y
cot x cot y - 1
7
7 tan x + 5 tan y
cot x
+
cot y
%3D
1 - tan x tan y
1
1..
1
cot x
cot y
7 cot y +
%3D
cot x• cot y
cot x • cot y – 1
cot x cot y
5 cot x + 7 cot y_
cot x cot y – 1
%3D
Transcribed Image Text:Verify the identity. 7 tan x + 5 tan y 1 - tan x tan y 5 cot x + 7 cot y cot x cot y - 1 7 7 tan x + 5 tan y cot x + cot y %3D 1 - tan x tan y 1 1.. 1 cot x cot y 7 cot y + %3D cot x• cot y cot x • cot y – 1 cot x cot y 5 cot x + 7 cot y_ cot x cot y – 1 %3D
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9781133382119
Author:
Swokowski
Publisher:
Cengage