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Molodets [167]
3 years ago
13

Which statement is correct?

Mathematics
1 answer:
Tju [1.3M]3 years ago
5 0
What statement? Im missing some information.
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XVerify the identity. (7 points) cos 4u = cos22u - sin22u
Alexandra [31]

Answer:

cos 4u = co^s2 2u - sin^2 2u

Step-by-step explanation:

cos 4u = co^s2 2u - sin^2 2u

Let 4u = 2x

cos 2x = cos^2 x - sin^ 2 x

cos (x+x) = cos^2 x - sin^ 2 x

Using cos(x+y) = cos(x)cos(y) -sin(x)sin(y)

cos(x) cos(x)- sin(x) sin (x)= cos^2 x - sin^ 2 x

cos^2 (x) -sin^2 (x) =cos^2 x - sin^ 2 x

Since this is true

cos 2x = cos^2 x - sin^ 2 x

This is true

Substituting 4u back for 2x

cos 4u = co^s2 2u - sin^2 2u

This is true

5 0
3 years ago
What is 1 over 4 as a percent​
mote1985 [20]

Answer:

25%

Step-by-step explanation:

1/4×100

=25

.............

5 0
3 years ago
Read 2 more answers
Y=x^2-2x what the vertex
____ [38]
I use my calculator
Y1 (the blue one) = x^2-2x
Graph
2nd trace minimum
X= 1 and y = -1
So the vertex is (1,-1)

6 0
3 years ago
The table shows values of f(x) What is f(2)? f(x) = 4, 2, 3, 9, 1 x= 0, 1, 2, 3, 4
Artyom0805 [142]
I’m confused ???can you post the table that they provide you with?
3 0
3 years ago
What is the area of the trapezoid?
EastWind [94]

Answer:

37.5 square units

Step-by-step explanation:

A=a+b/2h => 5 + 10 / 2 x 5

7 0
2 years ago
Read 2 more answers
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