What relationship do the ratios of sin x° and cos y° share?
a.) the ratios are both identical (3 over 5 and 3 over 5).
b.) the ratios are opposites (negative 3 over 5 and 3 over 5).
c.) the ratios are reciprocals (3 over 5 and 5 over 3).
d.) the ratios are both negative (negative 5 over 3 and negative 3 over 5).

(A) The ratios are both identical

Step-by-step explanation:

From the figure it is given that there is a right angled triangle having sides , therefore using the trigonometry in the given triangle, we have

and

Since both and are equal in measure, therefore both the ratios that is and share an equal relation with each other.

Therefore, the ratios are identical.

Hence, option A is correct.

a. she will receive a refund of $278.

step-by-step explanation:

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.