2 years ago

Hello! I need help with trignometry.

Mathematics

2 answers:

zlopas [31]2 years ago

8 0

This is your answer please look

Ulleksa [173]2 years ago

7 0

Step-by-step explanation:

cot < B = BC/AC = 7/24

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The latest online craze is a new game, Khan on Seven. You get 100 points for playing the game. In addition, you get 50 points fo

Blizzard [7]

Answer: $50x+100\geq18,000$

Step-by-step explanation:

Let w denotes a seven letter word which Sal will need to make to break the record.

Since you get 50 points for each seven-letter and 100 points for playing the game.

Then the total points earned by you by making w seven letters words will be:

$50x+100$

Since, Sal wants to break that record, and needs 18,000 points or more to do so.

Then , the required inequality will be :

$50x+100\geq18,000$

3 0

3 years ago

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

wlad13 [49]

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