Cos2a=1-2sin^2a for all values of a.

Answers

Answer 1

Answer: $cos2a= cos^(2) a- sin^(2) a \n but \ cos^(2) a + sin^(2) a=1 \n i.e. \ cos^(2) a=1- sin^(2) a$
Therefore,
$cos2a=1- sin^(2) a- sin^(2) a \n =1-2 sin^(2) a$

Answer 2

Answer:

true (just did this on apex)

Related Questions

Which of the following phases translate to the expression y+7
what is 7/10 minus 1/2
A jet ski depreciates at 11% of its original value each year. If the jet ski was 8,000at its time of purchase,what is the value of the jetski after 5years?A.13,480.47 B. 7,120.00C.6,958.86 D. $4,467.25
If f(x) is a polynomial with real coefficients and zeros of 4(multiplicity 2 ), -1(multiplicity2 ),-1+8i , and 2-2i, what is the minimum degree of f(x) ?
What is the missing term in the geometric sequence? -6,24 ,? ,384,-1536a.-204 b.-144 c.-96 d.-7

Nadine bought 5 quarts of oil for her car. How many fluid ounces is that?

Answers

Answer:

5 quarts is equal to 160 fluid ounces.

Step-by-step explanation:

Nadine bought 5 quarts of oil for her car. How many fluid ounces is that?

The relation between 1 quart and number of fluid ounces is :

1 quart = 32 fluid ounces.

So, 5 quarts will be = $5*32=160$ fluid ounces.

Hence, we can say that Nadine bought 160 fluid ounces for her car.

1 quart = 32 fluid ounces.

So, 5 quarts = ? fluid ounces.

Lets solve to find ?.

5 × 32 = 160

So, Nadine bout 160 fluid ounces (5 quarts) or oil for her car.

Hope I helped ya!!

The cost for a package of five plain T-shirts is $11.35. If c represents the cost of each individual T-shirt, the equation 5c = 11.35 can be used to find the value of c. Solve for c.

Answers

Answer:

Its actually 2.27

Step-by-step explanation:

five t-shirts in a pack for 11.35$. 11.35$ / 5 shirts = 2.26$ per shirt

Ken drew a pair of intersecting rays and marked the angle between them.Which of these statements best compares the pair of intersecting rays with the angle?

A.The rays and the angle have two endpoints each.
B.The rays have a number of points lying on them, and the angle has only one point lying on it.
C. The rays extend infinitely, and the angle is made by the rays which have a common endpoint.
D. The rays and the angle have their lines extending in opposite directions.

Answers

Answer:

C. The rays extend infinitely, and the angle is made by the rays which have a common endpoint

Step-by-step explanation:

We are given that Ken had drawn a pair of intersecting rays and have marked the angles between them.

As we know that a ray is a line segment which has one end point and is extended infinitely in one direction.

Moreover, an angle is a figure that is formed by the intersection of two rays which have a common end point.

Now according to the options, we see that in,

A. A ray cannot have two end points.

B. A ray extends infinitely, so having a number of points is not possible.

D. An angle cannot have a line.

So, we see that all the options except C are discarded.

Hence, option C is the best option that compares the pair of intersecting rays with the angle.

Answer: C. The rays extend infinitely, and the angle is made by the rays which have a common endpoint

Step-by-step explanation:

Given: Ken had drawn a pair of intersecting rays and have marked the angles between them.

The definition of angle says that an angle is a shape that is produced by the intersection of two rays that have a common end point.

A ray is a line segment that has only one end point and is extended infinitely in a unique direction .

According to the above definitions , the correct option is C "The rays extend infinitely, and the angle is made by the rays which have a common endpoint.".

PLEASEEEEEEEEEE HELPPPPP❤️

Answers

Answer:

Step-by-step explanation:

-6+√-4 = -6+2i

Answer:

-6 + 2i

Step-by-step explanation:

The square root of -4 is the imaginary number: 2i The -6 stays the same. So add,, but don't combine real and imaginary numbers.

-6 + 2i

What is the expression of 2+32times5

Answers

Answer:

2+32×5

If you want the answer:

2+160

162

Step-by-step explanation:

Answer:

2+5^32

Step-by-step explanation:

Variables x and y are in direct proportion, and y = 12.5 when x = 25. If x = 40, then y =A) 20
B) 28.5
C) 52.5
D) 65 will mark brainiest

Answers

(40/20)*12.5=20 is your answer .-.

Answer:

A.) 20

Step-by-step explanation:

(40/25)*12.5=20

Hope this helps.

Other Questions

What is 7x to the third power minus 1 as a verbal expression

The lengths of the sides of a quadrilateral are 4 consecutive even integers. The perimeter of the quadrilateral is 36 inches. What is the length of the longest side?\WILL GIVE BRAINLIESTNEED THIS ASAP

A rain gutter is to be constructed of aluminum sheets 12 inches wide. After marking off a length of 4 inches from each edge, this length is bent up at an angle θ. The area A of the opening may be expressed as the function: A(θ) = 16 sin θ ⋅ (cos θ + 1). If θ = 90°, what is the area of the opening?

Draw and label line AB. Draw point C on it