
Concept explainers
To verify: The given identity.

Explanation of Solution
Given information:
The following identity:
cscu2=±√2cscucscu−cotu
Formula used:
The following half angle formula:
sinu2=±√1−cosu2
The following Pythagorean relation:
cscθ=1sinθcosθsinθ=cotθ
Proof:
The given identity is verified as follows:
Working with the left side,
cscu2=1sinu2 [Pythagorean relation]=±1√1−cosu2 [Half angle formula]=±√2√1−cosu [Multiply numerator and denominator by √2]=±√2sinu√1−cosusinu [Divide numerator and denominator by sinu] =±√2sinu√1sinu−cosusinu [Seperate fractions] =±√2cscucscu−cotu [Pythagorean relations]
Since both sides are equal, the identity is verified
The identity is verified graphically as:
Graph:
Sketch the graph using graphing utility.
Step 1: Press WINDOW button to access the Window editor.
Step 2: Press Y= button.
Step 3: Enter the expressions Y1=cscu2 , Y2=√2cscucscu−cotu and Y3=−√2cscucscu−cotu which are required to graph.
Step 4: Press GRAPH button to graph the function.
The graph is obtained as:
Interpretation:
Since both the curves coincide, the identity is verified.
Chapter 5 Solutions
Precalculus with Limits: A Graphing Approach
- 3. [-/2 Points] DETAILS MY NOTES SESSCALCET2 7.4.013. Find the exact length of the curve. y = In(sec x), 0 ≤ x ≤ π/4arrow_forwardH.w WI M Wz A Sindax Sind dy max Утах at 0.75m from A w=6KN/M L=2 W2=9 KN/m P= 10 KN B Make the solution handwritten and not artificial intelligence because I will give a bad rating if you solve it with artificial intelligencearrow_forwardSolve by DrWz WI P L B dy Sind Ⓡ de max ⑦Ymax dx Solve by Dr ③Yat 0.75m from A w=6KN/M L=2 W2=9 kN/m P= 10 KN Solve By Drarrow_forward
- How to find the radius of convergence for the series in the image below? I'm stuck on how to isolate the x in the interval of convergence.arrow_forwardDetermine the exact signed area between the curve g(x): x-axis on the interval [0,1]. = tan2/5 secx dx andarrow_forwardSet up the partial fraction expansion of the function below. Do not explicitly solve for the variables 5 x²(x − 2)(x − 3)³ (24 - 81)² -arrow_forward
- Draw the triangle and show all the workarrow_forwardsolve these pleasearrow_forwardA factorization A = PDP 1 is not unique. For A= 7 2 -4 1 1 1 5 0 2 1 one factorization is P = D= and P-1 30 = Use this information with D₁ = to find a matrix P₁ such that - -1 -2 0 3 1 - - 1 05 A-P,D,P P1 (Type an integer or simplified fraction for each matrix element.)arrow_forward
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning





