Question 1

Determine whether the law of cosines can be used to begin the solution process for the triangle.

Accepted Answer

A)  yes 
B)  no 
A)  yes 
B)  no

Question 2

Solve for B (0 < B < 90°), if possible. Round to the nearest tenth of a degree.

Accepted Answer

A)  53.6° 
B)  54.4° 
C)  55.1° 
D)  not possible 
A)  53.6° 
B)  54.4° 
C)  55.1° 
D)  not possible

Question 3

Use the following to answer questions :
zS1U1B11S1U1B0 = 3 - 4i
zS1U1B12S1U1B0 = -1 - 3i
zS1U1B13S1U1B0 = 4 - i
-Express one complex number as the sum of the other two.

Accepted Answer

A)  z1 = z2 + z3 
B)  z2 = z1 + z3 
C)  z3 = z1 + z2 
D)  not possible 
A)  z1 = z2 + z3 
B)  z2 = z1 + z3 
C)  z3 = z1 + z2 
D)  not possible

Question 4

Use the following to answer questions :
For a certain AC circuit, R = 35 $\Omega$, XS1U1B1LS1U1B0 = 20  $\Omega$ and XS1U1B1CS1U1B0 = 8  $\Omega$, with I = 2 A.  
-Find the magnitude of Z, the phase angle between current and voltage, and write the result in trigonometric form.

Accepted Answer

A)  37 cis 68.2° 
B)  37 cis 18.9° 
C)  38 cis 68.2° 
D)  38 cis 18.9° 
A)  37 cis 68.2° 
B)  37 cis 18.9° 
C)  38 cis 68.2° 
D)  38 cis 18.9°

Question 5

Find the component of u along v (compute compvu) for the vectors u and v given. Round to the nearest hundredth.   1475 lbs

Accepted Answer

Question 6

Use the following to answer questions :  
-Compute the product z1z2 using the trigonometric form. Write your answer in exact rectangular form.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Determine whether the law of cosines can be used to begin the solution process for the triangle.

Solve for B (0 < B < 90°), if possible. Round to the nearest tenth of a degree.

Use the following to answer questions : z₁ = 3 - 4i z₂ = -1 - 3i z₃ = 4 - i -Express one complex number as the sum of the other two.

Find the component of u along v (compute comp_vu) for the vectors u and v given. Round to the nearest hundredth. 1475 lbs

Use the following to answer questions : -Compute the product z₁z₂ using the trigonometric form. Write your answer in exact rectangular form.

Equations and Inequalities

Relations, Functions and Graphs

Polynomial and Rational Functions

Exponential and Logarithmic Functions

Introduction to Trigonometric Functions

Trigonometric Identities, Inverses, and Equations

Systems of Equations and Inequalities

Analytical Geometry

Additional Topics in Algebra

Bridges to Calculus - an Introduction to Limits

Review of Basic Concepts and Skills

Filters

Exam 7: Applications of Trigonometry

Determine whether the law of cosines can be used to begin the solution process for the triangle.

Solve for B (0 < B < 90°), if possible. Round to the nearest tenth of a degree.

Use the following to answer questions : z1 = 3 - 4i z2 = -1 - 3i z3 = 4 - i -Express one complex number as the sum of the other two.

Use the following to answer questions : For a certain AC circuit, R = 35 Ω\OmegaΩ , XL = 20 Ω\OmegaΩ and XC = 8 Ω\OmegaΩ , with I = 2 A. -Find the magnitude of Z, the phase angle between current and voltage, and write the result in trigonometric form.

Find the component of u along v (compute compvu) for the vectors u and v given. Round to the nearest hundredth. 1475 lbs

Use the following to answer questions : -Compute the product z1z2 using the trigonometric form. Write your answer in exact rectangular form.

Equations and Inequalities

Relations, Functions and Graphs

Polynomial and Rational Functions

Exponential and Logarithmic Functions

Introduction to Trigonometric Functions

Trigonometric Identities, Inverses, and Equations

Systems of Equations and Inequalities

Analytical Geometry

Additional Topics in Algebra

Bridges to Calculus - an Introduction to Limits

Review of Basic Concepts and Skills

Filters

Use the following to answer questions : z₁ = 3 - 4i z₂ = -1 - 3i z₃ = 4 - i -Express one complex number as the sum of the other two.

Find the component of u along v (compute comp_vu) for the vectors u and v given. Round to the nearest hundredth. 1475 lbs

Use the following to answer questions : -Compute the product z₁z₂ using the trigonometric form. Write your answer in exact rectangular form.