3 years ago

Simplify the expression by using a double-angle formula. 2 cos^2 4 theta -1

1 answer:

3 0

You are given 2cos² (4θ - 1). You are asked to s<span>implify the expression by using a double-angle formula.

Apply the double angle of the cosine function
</span>cos2θ = 2cos² θ - 1

Rearranging the expression and then substituting them
2cos² θ = cos2θ + 1
2cos² (4θ - 1) = cos 2(4θ - 1) + 1
cos2(4θ - 1) + 1

You might be interested in

One side of a square measures 6 centimeters. How tall is your area?

fgiga [73]

Area is side times side

One side = 6 cm

Area= 6×6= 36cm squared.

6 0

3 years ago

Two friends, Alejandra and Mia, agreed to split the check at a restaurant. Alejandra ordered $12 worth of food and Mia ordered $

dedylja [7]

12+18=30 so together they have $30.00 in all.

6 0

3 years ago

If you wanted to create a sidewalk from your front door to the street, how much cement would you need if your sidewalk were goin

jek_recluse [69]

It’s simple you just multiply all three numbers 20*3*4=240

6 0

3 years ago

What is 33<img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D" id="TexFormula1" title="\frac{1}{3}" alt="\frac{1}{3}" align=

aleksklad [387]

Answer:

33.3 Repeating

Step-by-step explanation:

1. You already know that 33 is the whole number so you have 33.

2. 1/3 is converted to .3333333 so you put 33 before the decimal point

3. You get 33.3333333

Hope this helps :)

8 0

3 years ago

Helpppppppp ion know how to do this

mr_godi [17]

Answer:

x = 34

Step-by-step explanation:

100 + 12 + x = 180

112 + x = 180

68/2 = 34

X = 34

Have an amazing day!

Please mark brainliest!

7 0

2 years ago