Plsss help ASAP :) :)

steps below

Step-by-step explanation:

Step 1: Cot A / (1+cot A) * Cot B / (1+cot B )

= (Cot A  * Cot B) / ((1+cot A) *(1+cot B ))

= (Cot A  * Cot B) / (1+cot A+cot B+cot A cot B)

= (Cot A  * Cot B) / ((1+cot A+cot B)+ (cot A cot B))     : a

Step 2: (cot A * cot B -1) / (cot A + cot B) = cot (A+B) = cot 225° = 1  (formula)

            cot A * cot B -1 = cot A + cot B

            cot A * cot B  = 1 + cot A + cot B       (substitute a)

Step 3:

Cot A / (1+cot A) * Cot B / (1+cot B )

= (Cot A  * Cot B) / ((cot A * cot B)+ (cot A * cot B))

= (Cot A  * Cot B) / (2 * (cot A * cot B))

= 1 / 2

= 0.5

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4