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
Anvisha [2.4K]
3 years ago
15

Find the exact value of tan22.5 using the half angle formula.

Mathematics
2 answers:
mote1985 [20]3 years ago
7 0
Tan(a/2) = sin a / (1 + cos a)
tan(45/2) = sin(45) / (1 + cos(45)) = (1/√2) / (1 + 1/√2) = (1/√2) / (√2 + 1)/√2  = 1/(√2 + 1) = (√2 - 1)
marta [7]3 years ago
3 0

Answer:

C on Edge

Step-by-step explanation:

I got it right on the test

You might be interested in
Trick question<br> whats 50 divided by half plus 10
hoa [83]
50:\frac{1}{2}+10=50\cdot\frac{2}{1}+10=50\cdot2+10=100+10=\boxed{110}
5 0
3 years ago
Write the answer in interval notation
katovenus [111]
The domain is (-infinity, 6] I believe.
6 0
3 years ago
Kate baked a rectangular cake for a party she used 42 inches of frosting around the edges of the cake if the cake was 9 inches w
Leno4ka [110]
9 + 9 = 18
42 - 18 = 24
24 / 2 = 12
the length is 12 inches
7 0
3 years ago
Which table does not represent a proportional relationship?
bogdanovich [222]

Answer:

A does not have any proportional relationship.

Step-by-step explanation:

All of the other tables have obvious relationships, leaving A to be the answer.

3 0
2 years ago
Read 2 more answers
Which board geometrically represents 4x2 – 1 using algebra tiles? An algebra tile configuration showing only the product spot, w
NemiM [27]

An algebra tile configuration shows only the product spot, which has 9 tiles in 3 columns with 3 rows. First row: 2 + x squared, 1 + x. Second row: 2 + x squared, 1 + x. Third row: 2 negative x, 1 negative.

The correct option is B.

Given

Equation; \rm 4x^2 - 1

<h3>Quadratic equation</h3>

It is a polynomial that is equal to zero.

Polynomial of variable power 2, 1, and 0 terms are there.

Any equation having one term in which the power of the variable is a maximum of 2 then it is called a quadratic equation.

4x² -1 = 0 is a quadratic equation.

An algebra tile configuration showing only the product spot, which has 9 tiles in 3 columns with 3 rows. First row: 2 + x squared, 1 + x. Second row: 2 + x squared, 1 + x. Third row: 2 negative x, 1 negative.

Then,

The factors of the polynomial is;

\rm 4x^2 - 1=0\\\\ 4x^2-2x+2x-1=0\\\\ 2x(2x-1)+1(2x-1)=0\\\\(2x-1)(2x+1)=0

Hence, an algebra tile configuration shows only the product spot, which has 9 tiles in 3 columns with 3 rows. First row: 2 + x squared, 1 + x. Second row: 2 + x squared, 1 + x. Third row: 2 negative x, 1 negative.

More about the quadratic equation link is given below.

brainly.com/question/2263981

7 0
2 years ago
Other questions:
  • The links of the legs of a right triangle are 9 cm and 12 cm what is the length of a hypo hypotenuse
    6·2 answers
  • -2(bx-5)=16 what is the value of x in terms of b and what is the value of x when b is 3?
    9·1 answer
  • Find that slope of a line that passes through each pair of points
    6·1 answer
  • Determine the number of solutions the system has. 2x = 2y -6 y = -x-1
    12·1 answer
  • The line plot below shows the distances of discus throws in a contest.
    7·1 answer
  • Which relationship between x and y in the equation shows a proportional relationship
    6·1 answer
  • Can anyone help me with this question please ? <br> I’ll mark you as a brainliest.
    11·1 answer
  • You need gas for your car, and just as you are approaching where you normally get gas, the radio station announces that the Chea
    14·1 answer
  • A(x+1)(x-1)+b(x-2)(x+1)+(x+1)^2=9x-x-10 What is a+b?
    7·1 answer
  • Can you find the midpoint of AB​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!