For positive acute angles A and B, it is known that sin A ſ and tan B = 40. Find the value of cos(A + B) in simplest form.

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)

10 - 75

step-by-step explanation:

there's nothing attached so it's most likely anything in that range.