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Verdich [7]
3 years ago
14

1.What basic trigonometric identity would you use to verify that cot x sin x = cos x? . .

Mathematics
1 answer:
zavuch27 [327]3 years ago
3 0
1 ) cot x * sin x = cos x
(cos x / sin x) * sin x = cos x 
cos x = cos x
Answer: B ) cot x = cos x / sin x
2 ) ( sin² x + cos² x ) / cos x = sec x
1/cos x = sec x
sec x = sec x
Answer: C ) cos² x + sin² x = 1
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1
horsena [70]

Answer:

t=5 dollars per t-shirt

Step-by-step explanation:

<em>Read the problem and write your equation while following along with it</em>

We have 8 t-shirts

Lets 8 t-shirts be represented by 8t

So for our equation we will place and 8

<h3>Our equation: 8t</h3><h3 />

Now it says we have a coupon that subtracts 4 dollars from our total

<h3>Our equation: 8t-4</h3><h3 />

The final part to add to our equation says that our total before tax was 36 dollars

<h3>So here is our equation: 8t-4=36</h3><h3 />

<em>add </em>$4<em> to both sides</em>

8t=40

<em>Divide both sides by</em> 8

t=5 dollars per t-shirt

-Side note, make sure to spell your question right. It was a tad bit confusing to read at the start.

-Brainliest please :)

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