Trigonometry : Sum and Difference Identities
Not what you're looking for?
Use the sum and difference identities to find the exact value of cos(75) exactly
Which of these is the correct answer?
A. 2 (1- 3)/2
B. 2 (3-1)/2
C. 2 (1- 3)/4
D. 2 (3-1)/4
[show the steps in completing this problem]
Purchase this Solution
Solution Summary
Sum and difference identities are investigated. The solution is detailed and well presented. The response was given a rating of "5/5" by the student who originally posted the question.
Purchase this Solution
Free BrainMass Quizzes
Probability Quiz
Some questions on probability
Exponential Expressions
In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
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.