1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ivenika [448]
2 years ago
7

Sin^4a+cos^4a -sin^6a+cos^6a= sin^2a cos^2a

Mathematics
1 answer:
dsp732 years ago
7 0

Answer:

steps below

Step-by-step explanation:

sin⁴a+cos⁴a = (sin²a+cos²a)² - 2 sin²a cos²a

                   = 1 - 2 sin²a cos²a

sin⁶a-cos⁶a = (sin²a+cos²a)³ - 3 sin²a cos²a (sin²a + cos²a)

                   = 1³ - 3 sin²a cos²a * 1

                   = 1 - 3 sin²a cos²a

sin⁴a+cos⁴a-sin⁶a+cos⁶a = (1 - 2 sin²a cos²a) -(1 - 3 sin²a cos²a)

                                        = sin²a cos²a

You might be interested in
Sonny has $75 to spend the night the new Nintendo switch game that he wants to buy requires $93 his parents had they will lend h
Verdich [7]

Answer:

he needs 18 more dollars from his parents

Step-by-step explanation:

93-75=18 therefore he is missing 18 dollars

3 0
2 years ago
An investor invested a total of $2500 in two mutual funds. One fund earned a 5% profit while the other earned a 3% profit. If th
7nadin3 [17]

Answer:

$500 and $2000

Step-by-step explanation:

Let x represent the total investment = $2500

also, this total is split into two different funds

Lets represent these funds as a and b, such that fund a yields a profit of 3% and fund b yield a profit of 5%

So,

a + b = x

a + b =  2500   ......eq 1

Profit from each fund gives;

0.03 a + 0.05b = 115     ....eq 2

Solve simultaneously using substitution method

From eq 1;

b = 2500 - a

Slot in this value in eq 2

0.03a + 0.05 (2500 - a) = 115

expand

0.03a + 125 - 0.05a = 115

collect like terms

0.03a - 0.05a = 115 - 125

-0.02a = -10

Divide both sides by -0.02

a =  $500

Put this value of a in eq 1

500 + b =  2500

Subtract 500 from both sides

b = 2500 - 500

b = $2000

3 0
3 years ago
A sign company charges $28 per yard for each custom-made banner. Ms.Gill orders two banners that are each 178 yards long, and on
zhuklara [117]

Given,

A sign company charges $28 per yard for each custom-made banner.

Ms.Gill orders two banners that are each 178 yards long, and one banner that is 258 yards long.

To find,

Total money paid by Ms. Gill.

Solution,

Total length of 2 banners of 178 yards = 356 yards

Third banner is 258 yards long.

Total length of the banners = 356 + 258

= 614 yards

The cost of each banner = $28 per yards.

Total amount paid by Ms. Gill is :

= $28 × 614

= $17,192

Hence, she will pay $17,192 for all the three banners.

8 0
2 years ago
5u + 14 &gt; 64<br><br> Can someone tell me what U is?
ale4655 [162]
5u > 64 - 14
5u > 50
u > 10
7 0
3 years ago
Read 2 more answers
Part III: Bailey works part-time at a movie theater. The theater pays employees an hourly wage based on their length of employme
aleksklad [387]

From the given table, the points can be written as : (6,7.55) , (12,7.85), (18, 8.15) and (24, 8.45)

Slope m=\frac{_{y2}-_{y1}}{_{x2}-_{x1}}

m = \frac{7.85-7.55}{12-6}

m = 0.05

slope intercept form of line = y=mx+c

We plug m = 0.05, x = 6 and y = 7.55 and find c.

7.55=0.05(6)+c

c= 7.25

Required equation: y=0.05x+7.25 ... Answer

5 0
3 years ago
Other questions:
  • What is 720° converted to radians?<br> 1/4<br> pi/4<br> 4/pi<br> 4pi
    9·2 answers
  • In a certain Algebra 2 class of 26 students, 5 of them play basketball and 12 of them play baseball. There are 12 students who p
    6·1 answer
  • Which function has a graph with a horizontal asymptote at y = 3, a vertical asymptote at x = 1, and an x-intercept at 2?
    11·2 answers
  • What the reciprocal of 5/8 in fractions
    12·1 answer
  • I need help, trying to find slope and y intercept
    12·1 answer
  • Help me find the answer
    9·1 answer
  • Robbie owns 15 % more movies than Rebecca, and rebeca owns 10% more movies than Joshua. If Rebecca owns 220 movies, how many mov
    6·1 answer
  • 1 or 2?<br><br> Look at the picture. <br> Thank u!
    11·1 answer
  • Find the slope of the line between (4,1) and (7, 9)
    12·1 answer
  • Solve 25- (6-) A. -31 B-20 C.20 D. 31
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!