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
Alina [70]
3 years ago
6

Cos³x.tan²x - cosx = ?

Mathematics
1 answer:
melamori03 [73]3 years ago
4 0

tan x = sin x/cos x

cos³ x *tan²x - cos x = cos³x *(sin²x/ cos² x) - cos= cosx*sin²x - cos x =

= cos x(sin² x - 1) = - cos x(1 - sin²x)= - cosx*cos²x = - cos³ x

You might be interested in
What is $0.8\%$ of $125\%$ of $8128$? Express your answer as a decimal.
Andre45 [30]

Answer:

<h2>81.28</h2>

Step-by-step explanation:

To solve this kind of problem, we must remember that the word "of" means multiplication in math language, and all percentages numbers can be expressed as a fraction where the denominator is 100. Applying all this, we have

0.8\%\times 125\%\times 8128\\\frac{0.8}{100}\times \frac{125}{100} \times 8128\\ 0.008(1.25)(8128)=81.28

Therefore, all those percentages of 8128 results in 81.28

5 0
3 years ago
Read 2 more answers
Find the area of the shape below
maks197457 [2]

Answer:

204 ft^2

Step-by-step explanation:

<u>triangle on the left</u>:

A= l x w x 1/2

A = 12 x 5 x 1/2

A = 30 ft^2

<u>triangle on the right</u>:

Same thing

A = 30 ft^2

<u>square in the middle</u>:

A = l x w

A = 12 x 12

A = 144 ft^2

<u>Add them up</u>:

30 + 30 + 144 = 204 ft^2

3 0
2 years ago
Round each factor to the nearest ten to estimate the product of 34 . 39
aev [14]

Answer:

Round 34 down to 30 then round 39 up to 40

Step-by-step explanation:

34 ⟶ 30 34 is rounded down to 30

39 ⟶ 40 39 rounded up to 40

34 ⟶ 30

39 ⟶ 40

34 is rounded down to 30

39 rounded up to 40

Calculate mentally 34 × 39 =  1326

The estimated product is 1326.

3 0
2 years ago
Rewrite the following equation in slope-intercept form. x + 5y = -11 Write your answer using integers, proper fractions, and imp
AveGali [126]

Answer:

\displaystyle y = -\frac{x}{5} - 2\frac{1}{5}

Step-by-step explanation:

\displaystyle x + 5y = -11 → 5y = -x - 11 → \frac{5y}{5} = \frac{-x - 11}{5} \\ \\ y = -\frac{1}{5}x - 2\frac{1}{5}

I am joyous to assist you at any time.

7 0
2 years ago
Which of the following cultural regions is correctly matched to its location and primary language? A) Mexico; North america;span
aleksandrvk [35]
A is the Answer to your question.
7 0
2 years ago
Other questions:
  • 6xTo the -1st power times Y to the fifth power times 4X to the -4th power times Y to the -2nd power
    5·1 answer
  • What percent is equivalent to,_, <br> 0.82
    14·1 answer
  • 1 2 3 4 5 6 7 8 9 10
    5·1 answer
  • While riding her bike to the ocean and back home 6 times, Mandi timed herself at 52min, 54min, 53min, 51min, 53min, and 43min. S
    11·1 answer
  • Mamie saved $161.25. this is 25% of the amount she needs to save how mutch money does she need to save
    10·1 answer
  • Which fraction is bigger 30\100 or 3\10
    8·2 answers
  • Which equation represents a circle with a center at (2, -7) and a radius of<br> 4 units?
    12·2 answers
  • What's the degree of the polynomial? P(x)= 7x^7+2x^5+7x+7
    7·1 answer
  • A luxury chairs manager found that an employee made 3/4 of a chair every 3/8 of an hour
    12·1 answer
  • 15 cm<br> 4 cm<br> cm<br> V=____cm3
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!