Sign In
Ask Question
Byrd
Mathematics
15 March, 21:19
Prove
cosA x cos2A x cos4A x cos8A = sin16A/16sinA
+1
Answers (
1
)
Clinton Weeks
15 March, 21:42
0
Given cosA x cos2A x cos4A x cos8A = sin16A/16sinA
RHS
sin16A/16sinA
[2sin8A cos 8A]/16sinA
[cos8A (2sin4A cos4A) ]/8sinA
[cos8A cos 4A (2 sin 2A cos 2A) ]/4sinA
[cos 8A cos 4A cos 2A (sin2A) ]/2 sinA
[cos8A cos 4A cos 2A (2sinA cos A) ]/2
sin A cos A cos 2A cos 4A cos 8A
Hence RHS=LHS
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“Prove cosA x cos2A x cos4A x cos8A = sin16A/16sinA ...”
in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
Sally has 15 marbles in a bag. 6 are blue, 3 are red, 4 are yellow and 2 are black. What is the probability that Sally draws a blue marble?
Answers (1)
What shape has only 1 pair of parallel line
Answers (2)
For a circle with a radius of 6 feet, find the arc length of a central angle of 6 degrees. A. 36nft B. 3/5 pi ft C. 2/5 pi ft D. 1/5 pi ft
Answers (1)
ome friends are going on a coaster ride at an amusement park. They board their car on a platform that is 10 and one half feet above the ground. The car starts by going up 80 and one half feet.
Answers (1)
Which line is parallel to 5x=y-12
Answers (1)
New Questions in Mathematics
The sales tax for an item was $12.90 and it cost $430 before tax. Find the sales tax rate. Write your answer as a percentage.
Answers (1)
Choose the list that shows these numbers in order from smallest to largest. 0.29, 0.51, 0.07, 0.061
Answers (1)
Write an expression to match the words three times the sum of 8 + 4
Answers (2)
The graph for the systems of linear equations is, y=1/2x + 2 and y = x - 1 What is the solution?
Answers (2)
A train traveled 399 miles in 7 hours. Find the train's speed.
Answers (1)
Home
»
Mathematics
» Prove cosA x cos2A x cos4A x cos8A = sin16A/16sinA
Sign In
Sign Up
Forgot Password?