3 years ago

Simplify: 20 sin(2x) cos(2x)

1 answer:

alexandr1967 [171]3 years ago

8 0

Use the the double angle formula:
sin(2A)=2sin(A)cos(A)

substitute 2x for A, then
20sin(2x)cos(2x)=10(sin(2(2x))cos(2(2x))=10sin(4x)

You might be interested in

............please help

Novay_Z [31]

X-intercept: (3.5,0)
Y-intercept: (2.5,0)

6 0

2 years ago

Find the area of the shaded region to the nearest tenth. See picture for full problem. Please and thank you so much!

Anestetic [448]

Answer:

Step-by-step explanation:

Radius =6 ft

Area of circle = πr²

= 3.14 * 6 * 6

= 113.04 ft²

base = 10.39 ft

height = 6+3 = 9 ft

$Area \ of \ triangle = \dfrac{1}{2}*base * height\\\\\\=\dfrac{1}{2}*10.39*9\\$

= 46.76 ft²

Area of the shaded region = area of circle - area of triangle

= 113.04 - 46.76

= 66.28

= 66.3 ft²

8 0

2 years ago

Where do I put the parentheses for this question 5•2+3-8=17

MatroZZZ [7]

Answer:

HA HATDOGGGGGGGGG G Haha cjar

4 0

2 years ago

Read 2 more answers

Erin wants to carpet the floor of her closet. a floor plan of the closet is 4ft x 10ft x 3ft x 6ft. how much carpet does Erin ne

sammy [17]

You have to muliply it all togeather to get the exact answer. 4 times 10 equals 40 40 times 3 equals 120 then 120 times 6 equals 720 and thats the right answer

4 0

3 years ago

What are the parts of this expression: 5 x (m – 2)

EleoNora [17]

Answer:

5m - 10. Easy

Step-by-step explanation:

5m - 10

4 0

2 years ago