Sum/difference identities
Not what you're looking for?
Show all work for any credit!!!
1. Using the Sum/Difference Identities to find the following: sin11∏/12
2. Using the Sum/Difference Identities to find the following if:
sinß =105/5513; 0≤ß≤90 and cosa=117/225;270≤a≤360: tan(a+ß)
3. Using the information for a and ß from #2 above, find each of the following:
A)cos2a
B)tanß/2
Purchase this Solution
Solution Summary
This shows how to use sum/difference identities
Solution Preview
Please see the attachment.
Problem #1
We use the following identities.
1.
2.
From the identity 1 ...
Purchase this Solution
Free BrainMass Quizzes
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Exponential Expressions
In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
Solving quadratic inequalities
This quiz test you on how well you are familiar with solving quadratic inequalities.
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.