Given sin x = 8/10, 90° <x< 180° and tan y = -12/5, 270° ≤y≤ 360°. Without finding the values for angle x and y, determine cos x cos y + sin x sin y / tan x - tan y.

Step-by-step explanation:

Given

x lies in the second quadrant where sin and cosec is positive and rest trigonometric functions are negative

so,

similarly,

Also, y lies in 4 th Quadrant where cos and sec is positive and rest trigonometric functions are negative

Now putting the values

=

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (