Ill brainlist anyone who anwsers this

Mathematics

1 answer:

Ad libitum [116K]2 years ago

5 0

Answer:

-25.5 feet

Step-by-step explanation:

2.5x7=17.5

-8-17.5=25.5

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Help!! Asappp!! please

kotykmax [81]

Answer:

Step-by-step explanation:

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2 years ago

Can someone solve this?

ladessa [460]

First question:

Recall that $\cos^2x+\sin^2x=1$ and $\sqrt{x^2}=|x|$ for all $x$ . So

$\sqrt{1-\cos^2x}=\sqrt{\sin^2x}=|\sin x|$

$\sqrt{1-\sin^2x}=\sqrt{\cos^2x}=|\cos x|$

For $0$ , we expect both $\cos x>0$ and $\sin x>0$ (i.e. the sine and cosine of any angle that lies in the first quadrant must be positive). By definition of absolute value, $|x|=x$ if $x>0$ .