3 years ago

Pls help quick the blue lines at the bottom are the answer choices

Mathematics

1 answer:

kkurt [141]3 years ago

5 0

the answer is the third option

You might be interested in

8 and 8/9 - 5 and 1/11

bixtya [17]

The answer is 3 and 79/99

3 0

3 years ago

Read 2 more answers

11,017eight in decimal form

Burka [1]

Answer:

in scientific notation it is 1.1017 X 10 ^4

Step-by-step explanation

3 0

4 years ago

Verify sin^4x − sin^2x = cos^4x − cos^2x is an identity

Inga [223]

Answer:

<h2>It's an identity</h2>

Step-by-step explanation:

$\sin^4x-\sin^2x=\cos^4x-\cos^2x\\\\L_s=\sin^4x-\sin^2x=\sin^2x(\sin^2x-1)=\sin^2x(-\cos^2x)=-\sin^2x\cos^2x\\\\R_s=\cos^4x-\cos^2x=\cos^2x(\cos^2x-1)=\cos^2x(-\sin^2x)=-\sin^2x\cos^2x\\\\L_s=R_s\qquad\bold{CORRECT}$

$\text{Used:}\\\\\sin^2x+\cos^2x=1\Rightarrow\left\{\begin{array}{ccc}\cos^2x=1-\sin^2x\\\sin^2x=1-\cos^2x\end{array}\right\Rightarrow\left\{\begin{array}{ccc}-\cos^2x=\sin^2x-1\\-\sin^2x=\cos^2x-1\end{array}\right$