3 years ago

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

1 answer:

6 0

Double angle formula for cos(2x) is
cos(2x)=cos^2(x)-sin^2(x)

Substitute x=4theta, then
cos(8theta)=cos^2(4theta)-sin^2(4theta)
=>
cos^2(4theta)-sin^2(4theta) = cos(8theta)

You might be interested in

The spinner shown has six equal-size sections and is spun twice.

Ivenika [448]

Answer:
4/36

Explanation:
There are 6 numbers and if spines twice other 6, if these are multiplied with each other there will be a total of 36 products or probabilities.
On total there are four 12
2 x 6
3 x 4
4 x 3
6 x 2

6 0

3 years ago

5 1/4+3 1/4=<br><br><br><br>plzzzzzzz I am despite

Leno4ka [110]

The answer is 8 2/4.

(ignore this part because i just need more words lol)

4 0

2 years ago

Read 2 more answers

Given that g(x) = 2x ^ 2 - 2x + 8 , find each of the following. a) g(0) b) g(- 2) C) g(3) d) g(- x) e) g(1 - t)

raketka [301]

Answer:

$g(-2)=20$