QUESTION 1 1.1 1.2 1.3 Given the arithmetic sequence: 7; 2; -3; ... Calculate: 1.1.1 The n-th term, Tx. 1.1.2 The 20 term, Tao 1.1.3 The sum of the first 20 terms. The 8 term of a geometric sequence is 640 and the 5 term is 80. Determine the 3 term of the sequence, Calculate'n if (5r-2) = 255

Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter5: Identities And Formulas
Section5.4: Half-angle Formulas
Problem 46PS: Prove the following identities. 2cos22=sin21cos
icon
Related questions
Question
QUESTION 1
1.1
1.2
1.3
Given the arithmetic sequence: 7; 2; -3, ... Calculate:
1.1.1 The n-th terra, Tx.
1.1.2
The 20 term, Tro
The sum of the first 20 terms.
term of a geometric sequence is 640 and the 5th term is 80.
1.1.3
The 8
Determine the 3¹ term of the sequence,
Calculate'n if(5r-2) = 255
Transcribed Image Text:QUESTION 1 1.1 1.2 1.3 Given the arithmetic sequence: 7; 2; -3, ... Calculate: 1.1.1 The n-th terra, Tx. 1.1.2 The 20 term, Tro The sum of the first 20 terms. term of a geometric sequence is 640 and the 5th term is 80. 1.1.3 The 8 Determine the 3¹ term of the sequence, Calculate'n if(5r-2) = 255
.3 If cos 70*
..3.1
3.2
a, express the following in terms of a:
sin 140*
sin 145 sin(-55)
Transcribed Image Text:.3 If cos 70* ..3.1 3.2 a, express the following in terms of a: sin 140* sin 145 sin(-55)
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Recommended textbooks for you
Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
Trigonometry
ISBN:
9781305652224
Author:
Charles P. McKeague, Mark D. Turner
Publisher:
Cengage Learning
Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage
Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
Algebra
ISBN:
9781285463247
Author:
David Poole
Publisher:
Cengage Learning