Question: Simplify the given expressions. cos(x + )cos(x ) + sin(x + )sin(x )

Simplify the given expressions.

cos(x + π)cos(x − π) + sin(x + π)sin(x − π)

Step by Step Solution

★★★★★

3.41 Rating (167 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

Using the identities cosx cosx sinx sinx cosx cosx sinx sinx W... View full answer

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 Basic Technical Mathematics Questions!

Q:

9. sin u + cot 11. sec - cos 0 sin 0 13. 13-28 Simplifying Trigonometric Expressions Simplify the trigonometric expression. sin x sec x tan x 15. sin t + tant tan t 17. cosx + sinx cos x secx - 1...

Q:

In Sec. 34, use expressions (13) and (14) to derive expressions (15) and (16) for |sin z|2 and |cos z|2. (13) sin z = sin x cosh y + i cos x sinh y, (14) cos z = cos x cosh y i sin x sinh y, where z...

Q:

Expand and simplify the given expressions by use of the binomial formula. 6 a (1 + x) x

Q:

Simplify the given expressions. cos5x cos x + sin 5x sin x

Q:

Only 61, 63, 65 61-66. Right-triangle relationships Draw a right triangle to simplify the given expressions. Assume x > 0. 61. cos (sin x) 62. cos (sin ' (x/3) ) 63. sin (cos (x/2) ) 64. sin (cos 0),...

Q:

Hi I have 9 easy practice math questions for trigonometry I just need answers, please do not show work that way I can find out if I'm wrong. I'm using this to compare to my original answers. Please...

Q:

Hi I have 9 easy practice math questions for trigonometry I just need answers to compare with my original answers. Please let me know if you prefer not doing some of them. Will endorse . Question 6...

Q:

Use half angle formulas or formula for reducing powers to fill in the blanks in the identity below: (sin(7x))* = COS ( + cos(Use a half angle formula or formula for reducing powers to fill in the...

Q:

Questions 75-87 (odd only pls) 7582. Evaluating inverse trigonometric functions Without using a calculaton evaluate the following expressions. 75. tan1% 76. cot1(1/\\/) 77. sec1 2 78. csc_1(1) 79....

Q:

If sin r = ", * in quadrant I, then find (without finding x) sin(2x) cos (2x) = tan (2x) = Question Help: Message instructor D Post to forum Submit Question Question 16 60/1 pt O 100 2 99 0 Details...

Q:

You purchased a car using some cash and borrowing $15,000 (the present value) for 50 months at 12% per year. Calculate the monthly payment (annuity).

Q:

Currently, BIOTECH Technologies has a total of 165,000 users. They have reached this number of users given their recent hugely successful customer acquisition campaign which reached 500,000...

Q:

You are the manager of your department. You have just hired a summer intern. As a team, write an e-mail to your staff introducing the intern. Create any necessary background that you think your staff...

Q:

3. What are the potential costs of this transaction?

Q:

Convert 2017 to a numeral in the base indicated. 7

Q:

Write the numeral as a Roman numeral. 9999

Q:

Convert 2017 to a numeral in the base indicated. 6

Q:

Jack Motors manufactures a range of motor cars and its year end is 31st January 2019. You are the audit supervisor of Ayeyi & Partners and are currently preparing the audit programmes for the...

Q:

Pavin acquires all of Stabler's outstanding shares on January 1,2018 , for $690,000 in cash. Of this amount, $53,000 was attributed to equipment with a 5-year remaining life and $63,000 was assigned...

Q:

5.1 Corp X, a Delaware business corporation, owns all the membership interest in Upper LLC, a Delaware limited liability company, and 60% of the membership interest in Lower LLC, also a Delaware...