All categories

2 years ago

Click through to find the correct identity.

Mathematics

1 answer:

Aleksandr [31]2 years ago

6 0

Answer:

Step-by-step explanation:

cos2θ = 2 cos^2 θ - 1

2cos^2 θ = 1 + cos2θ

cos^2 θ = (1 + cos2θ)/2

You might be interested in

Find an answer pls thanks

Bogdan [553]

Answer:

where's the question...?

Step-by-step explanation:

8 0

3 years ago

Which statement best describes the relationship between storage space and number of music files?

Rina8888 [55]

Answer:

As the number of files increases, the storage space used increases.

7 0

3 years ago

A company is building a new park in the shape of a circle with a 25 ft diameter. Portions of the new park will be covered with g

emmasim [6.3K]

Answer: The area of the regions covered by grass is approximately 313.375 sq ft.

Step-by-step explanation:

Given: A company is building a new park in the shape of a circle with a 25 ft diameter.

Then radius = $\dfrac{25}{2}=12.5\ ft$

Required area = Area of circle - Area of rectangle + Area of triangle

Formula: Area of circle = $\pi r^2$

Area of rectangle = length x width

Area of triangle = 0.5 x base x height

Area of circle = $(3.14)(12.5)^2=490.625\ \text{ft}^2$

Area of rectangle = 20 ft x 10ft = 200 ft²

Area of triangle = 0.5 x 7 x 6.5 = 22.75 ft²

Required area = 490.625 -200+22.75 = 313.375 ft²

Hence, The area of the regions covered by grass is approximately 313.375 sq ft.

4 0

3 years ago

Who was Novia scotias reform leader

qaws [65]

Step-by-step explanation:

Their leaders were Charles Tupper and Adams george Archibald

7 0

2 years ago

Find the distance between the endpoints (7,8) (4,2) A.10.8 B.2.2 C.6.7 D.14.9

Paha777 [63]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{6.7}}}}}$

Option C is the correct option.

Step-by-step explanation:

Let the points be A and B

Let A ( 7 , 8 ) be ( x₁ , y₁ ) and B ( 4 , 2 ) be ( x₂ , y₂ )

Finding the distance between these points

$\boxed{ \sf{distance \: = \: \sqrt{ {(x2 - x1)}^{2} + {(y2 - y1)}^{2} } }}$

$\dashrightarrow{ \sf{ \sqrt{ {(4 - 7)}^{2} + {(2 - 8)}^{2} } }}$

$\dashrightarrow{ \sf{ \sqrt{ {( - 3)}^{2} + { (- 6)}^{2} } }}$

$\dashrightarrow{ \sf{ \sqrt{9 + 36}}}$

$\dashrightarrow {\sf{ \sqrt{45} }}$

$\dashrightarrow{ \sf{6.7 \: \: units}}$

Hope I helped!

Best regards! :D

6 0

3 years ago