PLEASEEEE SOMEONE HELP ME WITH THIS ITS DUE IN A COUPLE HOURS!!!!! FOR trigonometry

Mathematics

1 answer:

evablogger [386]3 years ago

7 0

Answer:

I think the last one is the answer

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Who knows how to do this question?

Akimi4 [234]

Finding the value of x and y.

x:

sin 30 = 1/x
x = 1/sin 30
x = 2

y:

cos 30 = y/2
2(cos 30) = y
1.73 = y

Now the table:

sin 30 = 1/2
cos 30 = 1.73/2
tan 30 = 1/1.73

sin 60 = 1.73/2
cos 60 = 1/2
tan 60 = 1.73/1

Hope this helps :)

7 0

3 years ago

What is the midline equation of y = -4sin (2x - 7) + 3?

Georgia [21]

Answer:

$y = 3$ .

Step-by-step explanation:

The minimum and maximum value of $\sin(2\, x - 7)$ over all real $x$ are $(-1)$ and $1$ , respectively. Hence, the maximum and minimum value of $y = -4\, \sin(2\, x - 7) + 3$ would be:

Maximum: $y = (-4)\, (-1) + 3 = 7$ .
Minimum: $y = (-4)\, (1)\ + 3 = (-1)$ .

The midline equation of a sine wave is a horizontal line that is right in the middle of maximum and minimum $y$ -values of that sine wave. In the sine wave in this question, the average of the maximum and minimum $y\!$ -values is $(1/2) \, (7 + (-1)) = 3$ . Hence, the midline equation of this sine wave would be $y = 3$ .