Please help me with this question

cosθ₁ = -

Step-by-step explanation:

Given

sinθ₁ = - =

This is a 5- 12- 13 right triangle

with opposite = 12, adjacent = 5 and hypotenuse = 13

Given θ₁ is in the 3rd quadrant where cosθ₁ < 0 , then

cosθ₁ = - = -

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

hope this !