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
Stels [109]
2 years ago
8

Prove that

20" id="TexFormula1" title=" \frac{1 }{ \sin(x) \times \cos(x) } " alt=" \frac{1 }{ \sin(x) \times \cos(x) } " align="absmiddle" class="latex-formula">
equals 2csc2x
​
Mathematics
1 answer:
konstantin123 [22]2 years ago
3 0

Answer:

See below for proof

Step-by-step explanation:

2csc(2x)\\\\2[\frac{1}{sin(2x)}]\\ \\2[\frac{1}{2sin(x)cos(x)}]\\ \\\frac{2}{2sin(x)cos(x)}\\ \\\frac{1}{sin(x)cos(x)}

Thus, the identity is proven

You might be interested in
Sam is 4 times as old as Allie. <br> Write an equation to model this situation.
Rzqust [24]
The answer is A. S= 4A. Sam = Allie x 4 
5 0
3 years ago
Read 2 more answers
Reduce -2+b2 by 7+b2
svlad2 [7]
I think the answer is -9.
4 0
3 years ago
Please help!!! Thank you
denpristay [2]

Answer:

(a) is a real number as the answer is -3

(b) is not a real number as the answer is an imaginary number

Step-by-step explanation:

For (b), when you root a negative number, you will get an imaginary number which is not a real number

4 0
3 years ago
Please help me I have a quiz on Friday !
BaLLatris [955]

Answer:

\displaystyle A_l=6.97\ ft^2

Step-by-step explanation:

<u>Subtractive Areas </u>

When we want to find areas of surfaces that are inside of greater surfaces, we must subtract the greater minus the rest of it. We want to find the shaded area which is part of the circular sector, along with a right triangle shown in the figure. The area of a circle is

\displaystyle A=\pi \ r^2

The area of a circular sector of center angle \theta is

\displaystyle A_s=\frac{\theta \ r^2}{2}

The area of a right triangle with base b and height h is

\displaystyle A_t=\frac{b.h}{2}

We have the value of \theta is

\displaystyle \theta =100^o=\frac{100.\pi }{180}

\displaystyle \theta =\frac{5\pi }{9}rad

The radius is half the diameter, thus

\displaystyle r=\frac{6}{2}=3\ ft

The area of the circular sector is computed now:

\displaystyle A_s=\frac{5\pi }{9}.3^2

\displaystyle A_s=5\pi\ ft^2

We also have the length of the base as double of the given value (because of symmetry)

\displaystyle b=4.6\ ft*2

\displaystyle b=9.2\ ft

The height is

\displaystyle h=1.9\ ft

The area of the triangular surface is

\displaystyle A_t=\frac{(9.2)(1.9)}{2}

\displaystyle A_t=8.74\ ft^2

Finally, the shaded area that Geneva will lose from the table is

\displaystyle A_l=A_s-A_t

\displaystyle A_l=5\pi -8.74

\boxed{\displaystyle A_l=6.97\ ft^2}

6 0
3 years ago
Help now for test i will brainlist
Naily [24]

Answer:The answer is c

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Don buys 6 kiwis for 3$ what would a customer have to pay for 9 kiwis
    15·2 answers
  • How to write a system of inequalities
    9·2 answers
  • A 15-minute TV program consists of one commercial of 1
    6·2 answers
  • What is the vertex form, f(x) = a(x - h)2-k, for a parabola that passes through the point (2,8) and has (1,0) as its
    13·1 answer
  • The ratio of the age of 3 people p q and r is 6:7:11 if the sum of p and r is 102 years find age of q
    12·1 answer
  • If the simple interest on $4,000 for 7 years is $1,400, then what is the interest rate?
    15·1 answer
  • A. Right B. Isosceles C. Obtuse O D. Equilateral E. Scalene F. Acute​
    13·1 answer
  • PLZZZ ANSWER I BEG U
    9·1 answer
  • Find the length of AC
    11·1 answer
  • PLZ HELP...
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!