In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ab=9, and ac=12, find hc.

HC = 5.25 units

Step-by-step explanation:

It is given in the ΔABC, ∠ABC = 90°, side BH is the altitude of the triangle.

AB = 9 and AC = 12 units and we have to find the length of HC.

In the right angle triangle ΔABC

Now from ΔABH

Since cosine of angle is common in both the triangles.

Therefore

Since HC = AC - AH = 12 - 6.75 = 5.25 units

Therefore answer will be HC = 5.25 units.

correct answer:

b.(19,-2)

answer: 94

step-by-step explanation: 79+91+92+94+94 = 450 divided by 5 (since there are 5 number that are being added) = 90