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
Andrew [12]
3 years ago
8

Sinxcosxtanx=1-cos^2x

Mathematics
1 answer:
ycow [4]3 years ago
7 0

Step-by-step explanation:

sin  x \: cos  x \: tanx = 1 -  {cos}^{2} x \\ LHS \\= sin  x \: cos  x \: tanx \\  =sin  x \: cos  x \: \times  \frac{sin  x}{cos  x}  \\  = sin  x \: \times  \frac{sin  x}{1} \\  ={sin}^{2}  x \\  = 1 -  {cos}^{2} x \\  = RHS \\  \therefore \: sin  x \: cos  x \: tanx = 1 -  {cos}^{2} x \\ Hence \: Proved.

You might be interested in
1.<br> 4 sides equal sides and 4 right angles:<br> 4 sides equal sides and 4 right angles
larisa86 [58]

Answer:

a square

Step-by-step explanation:

8 0
3 years ago
Macs farm has a total of 18 horses and 27 cows. what is the ratio of horses to cows in simplest form?
Evgesh-ka [11]
The ratio is basically finding the quotient of two numbers. If you want to find the ratio of horses to cows, divide the number of horses to that of cows.

Ratio = 18/27

When expressing it to its simplest form, make sure it is reduced. 18 and 27 are both factors of 9. So,

Ratio = 9*2/9*3
Cancelling out 9, the ratio at its simplest form is: <em>2/3</em>
7 0
3 years ago
My brain stopped. I need help
Alisiya [41]

Answer:

x = 99°

y = 91°

Step-by-step explanation:

For Cyclic quadrilateral, the sum of the opposite angles = 180°

Let's find x :-

x + 81° = 180°

x = 180 - 81

x = 99°

Let's find y :-

y + 89° = 180°

y = 180 - 89

y = 91°

Hope this helps you !

5 0
2 years ago
If rectangle ABCD is dilated by a scale factor of 3 with a center of dilation at vertex D, what is the perimeter of A'B'C'D?
kramer
The ans is C) 90 units
5 0
3 years ago
Maria looked at the architectural plan of a room with four walls in which the walls meet each other at right angles. The length
babymother [125]
Using the Pythagorean theorm, 
a^2 + b^2 = C^2, where a nd b are the side lengths and c is the hypotenuse ( diagonal line)

If it was a square both sides would be the same length so we would have:
13^2 +13^2 = c^2
169 + 169 = c^2
338 = c^2

c = SQRT(338) = 18.38

18.38 is larger than the 15.26 given in the problem , so the room is not a square.
4 0
3 years ago
Other questions:
  • 12 of the students in a Geometry class passed a Geometry test. If these students are 80% of all the students in the class, how m
    11·1 answer
  • What is the value of x to the nearest tenth? <br> 2.8 <br> 4.2 <br> 4.8 <br> 6.9
    7·1 answer
  • Elixir of acetaminophen contains 160 my per 5 milliliters. How much acetaminophen is needed to prepare 2 ounces of elixir?
    10·1 answer
  • Rectangle is 2/5 in. long and 1/3 in. wide.
    5·1 answer
  • The product of two interferes is 72. If one integer is 18,what you is the other integer?
    8·1 answer
  • Jemina flips a disc of the type shown below: A disc with two layers is shown. The top layer is shaded in a darker shade of gray,
    10·1 answer
  • The table shows a direct variation.
    12·1 answer
  • Plz help it's dues 15 min for 11pts
    6·1 answer
  • What is the answer I need to know
    6·2 answers
  • The water rate in a village in westchester county is $3.74 per 100 cubic feet used. What is the water bill if the resident uses
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!