2 years ago

PLSSS HELPPP MEEEE I NEED IT FAST BEFORE 9am PLSS

Mathematics

2 answers:

kondor19780726 [428]2 years ago

6 0

What the person said on the top they sound smart lol

Zielflug [23.3K]2 years ago

5 0

Answer:

4.) 864π = 2714 inches^3

5.) 20.9 feet^3

6.) 871 yards^3

7.) 7850.8 inches^3

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There is a photo attached<br><br>tan 270 is incorrect!

wlad13 [49]

$\dfrac{1-\cos135^\circ}{\sin135^\circ}=\dfrac{1-\left(\cos^2 67.5^\circ-\sin^2 67.5^\circ\right)}{2\sin67.5^\circ\cos67.5^\circ}=\dfrac{1-\left(1-\sin^2 67.5^\circ-\sin^2 67.5^\circ\right)}{2\sin67.5^\circ\cos67.5^\circ}=\medskip\\=\dfrac{2\sin^2 67.5^\circ}{2\sin67.5^\circ\cos67.5^\circ}=\dfrac{\sin 67.5^\circ}{\cos 67.5^\circ}=\tan 67.5^\circ$