2 years ago

Prove this identify : 2 cos^2 (45°-A ) = 1 +sin 2 A

Mathematics

1 answer:

11Alexandr11 [23.1K]2 years ago

4 0

I wasn’t sure how to put this into words. I hope this makes sense. <3

You might be interested in

Whats the density of an object with the length of 5.0 cm a height of 3.0 and width of 15.0 cm and a mass of 24 grams

Sphinxa [80]

Answer:

The density of the object is $0.1067$ grams per cubic centimeter. (Rounded off to 4th decimal)

Step-by-step explanation:

Density = [Mass/Volume]

Here we have been given the dimensions of the object.

Volume = Height * Width * Length

Volume = $3.0cm*15.0cm*5.0cm$

= $225cm^{3}$

Now we can substitute the Mass and the Volume to the density equation.

Density = [Mass/Volume]

= $\frac{24grams}{225cm^{3} }$

= $0.1067$ grams per cubic centimeter. (Rounded off to 4th decimal)

4 0

3 years ago

A construction worker drops a hammer while building the Grand Canyon skywalk 4,000ft above the Colorado River. Use the formula t

yan [13]

Answer:

15.8

Step-by-step explanation:

We are asked to find how many seconds it takes for an object to fall from a height of 4,000ft. We will use the given formula, t=h−−√4. Substituting h=4,000, we find

t=4000−−−−√4=15.8

So, the hammer reaches the river after 15.8 seconds.

7 0

2 years ago

Composite functions (Question in image)

Annette [7]

$f(0) = - 6 + 4 = - 2 \\ g( - 2) = 4$

7 0

3 years ago

1/10 of 500 is 10 times as much as _

Sliva [168]

1/10 of 500 is 50 so the answer is 5

4 0

3 years ago

Read 2 more answers

The length of a classroom is 34 feet. What is this measurement in yards and feet?

Harman [31]

There is 34 feet. One Yard has 3 feet so 34/3 should be your answer to yards. (The answer is 11.33333333 yards).

5 0

3 years ago

Prove this identify : 2 cos^2 (45°-A ) = 1 +sin 2 A​

Prove this identify : 2 cos^2 (45°-A ) = 1 +sin 2 A