53. tan + cot 2. 2cscx %3D

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 79E
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#53 Verify the identify 

tan x/2 + cot x/2 = 2cscx

by Julie Miller (z-lib.org).pdf
215
Q search
53
50. sina
< a < T
65 2
For Exercises 51–56, verify the identity.
53. tanž + cot -
Csc e - cot 0
sec 0 + 1
51. sin
52. cos
= 2cscx
2 csc 0
2 sec 0
54. tan- = cscx
2.
55.2sin + 4cos
-3%3 cosx
56. cos
2t
3 sin +1 =
cotx
Mixed Exercises
1 + cos 20
1 - cos 20
2.
57. Show that cos 0
58. Show that tan 0
2
1 + cos20
For Exercises 59-64, given restrictions on x, determine
whether Expression 1 is less than, greater than, or equal to
Expression 2 or whether the relationship cannot be
For Exercises 65-70, use the information aboit a
given in the figures to find the exact function vali
the answers as decimals or as square roots of deci
determined.
Expression 1
Expression 2
(x, 0.8)
59.5T
(1,0)
< x <
4.
tanx
tan
60.
4
cos 2x
(-0.8, y)
COSX
61.
< x <
4.
COSX
COS-
65. a. sin 2a
b. cos 2a
62.
66. a. sin 26
b. cos 23
tanx
sin
4.
67. a. sin-
b. cos
Transcribed Image Text:by Julie Miller (z-lib.org).pdf 215 Q search 53 50. sina < a < T 65 2 For Exercises 51–56, verify the identity. 53. tanž + cot - Csc e - cot 0 sec 0 + 1 51. sin 52. cos = 2cscx 2 csc 0 2 sec 0 54. tan- = cscx 2. 55.2sin + 4cos -3%3 cosx 56. cos 2t 3 sin +1 = cotx Mixed Exercises 1 + cos 20 1 - cos 20 2. 57. Show that cos 0 58. Show that tan 0 2 1 + cos20 For Exercises 59-64, given restrictions on x, determine whether Expression 1 is less than, greater than, or equal to Expression 2 or whether the relationship cannot be For Exercises 65-70, use the information aboit a given in the figures to find the exact function vali the answers as decimals or as square roots of deci determined. Expression 1 Expression 2 (x, 0.8) 59.5T (1,0) < x < 4. tanx tan 60. 4 cos 2x (-0.8, y) COSX 61. < x < 4. COSX COS- 65. a. sin 2a b. cos 2a 62. 66. a. sin 26 b. cos 23 tanx sin 4. 67. a. sin- b. cos
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