Question: prove 2 cosx - 2 cos ^ 3 x = sinxsin 2 x

prove 2cosx-2cos^3x=sinxsin2x

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Q:

HELP!!! Please answer this questions below all of them correctly; I really need to submit by tomorrow morning otherwise I will get f on this questions below, please help me out to answer each of the...

Q:

Hi I need help on what is the answer to this problems? Below is the question and other concerns will be in the comment section . I hope you can help me and surely I will give you full positive...

Q:

CIRCULAR FUNCTIONS/TRIGONOMETRIC EQUATIONS AND IDENTITIES. A SUMMARY OF BASIC IDENTITIES AND FORMULAE Pythagorean Identities: sin 2 cos 2 1 1 tan 2 sec 2 1 cot 2 csc2 Reciprocal and Quotient...

Q:

sec x csc x- tan x-cot x hoose the correct proof below. OA. sec x csc x- tan x = 1 1 cos x sin x sin x cos x 2 1- sin x sin x cos x cos 2 = cot x X OC. sec x csc x- tan x 1 1 = . sin x cos x sin x 1-...

Q:

Ask For h(ac) 2ac sin(ac) , find h (x ). ON h'() 2sin 2 sin (a) -2x cos(x) cos' (x) ( B) h' (x ) 2 sin (x) -2x cos (x) sin? (x) Och'(x) 2 cos(x) - 2x cos (x) sin (a) D) h'() = 2 sin (x ) - 2x sin (x)...

Q:

Use Newton's method to find solutions accurate to within 105 for the following problems. a. ex + 2x + 2 cos x 6 = 0 for 1 x 2 b. ln(x 1) + cos(x 1) = 0 for 1.3 x 2 c. 2x cos 2x (x 2)2 = 0...

Q:

Solve the following integrals. 17+20x +5x2 secca) dx L by two methods dx 3 5-25inx +3 Cosx Cos x -d- 2 Sin x + Sin'x 2. dx +- e -d- (3+ x) tan (x*) dx 2 Cos hx + Sinhx +

Q:

1. [-/2 Points] DETAILS SCALC8 11.10.011.MI. MY NOTES Find the Maclaurin series for f(x) using the definition of a Maclaurin series. [Assume that f has a power series expansion. Do not show that...

Q:

need help with practice questions MCV4U Practice Answer (or Solution) Practice Questions 1. Consider the function f(x) defined by the following graph: 2 1-4 -3 -2 -1 2 Find: a) lim f(x) b) lim f(x)...

Q:

d) sin K e) cos 2 f) tan 3) Verify each of the following: (Hint: Work with the left side, use properties to expand, then simplify. If you do it correctly, the work on the left will lead to the...

Q:

The following table shows the five scores from an Introductory Statistics course. Find a model for final sure to check the conditions for multiple regressions. 2 5 6 3 5 7 2 5 3 10 1 1 9 1 8 8 9 9 0...

Q:

P1 Cash disbursements schedule. Maris Brothers Inc. needs a cash disbursement schedule for the months of April, May, and June. Use the format of the Table below. 9 10 11 12 13. 14 15 16 17 18 19 20...

Q:

According to World Bank statistics, the population of Nigeria has increased from around 45 million back in 1960 to over 163 million in 2013, an increase of over 262 per cent. Figure 22.5 illustrates...

Q:

What is the difference between a variable declaration and a variable definition in C + + ? Group of answer choices A variable declaration provides information to the compiler about the type and name...