Given: △abc, m∠c=90° m∠abc=30°, al ∠ bisector lb=18m. find: cl
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  9 m

Step-by-step explanation:

  ∠CAB = 90° -∠ABC = 90° -30° = 60°

Since AL bisects angle A, we have ...

  ∠LAC = ∠LAB = 60°/2 = 30°

Then ∠BAL = ∠ABL = 30° and ΔABL is isosceles with AL = LB = 18 m.

The 30°-60°-90° triangle ALC has sides in the ratio ...

  CL : CA : AL = 1 : √3 : 2

so

  CL/AL = 1/2

  CL = AL/2 = (18 m)/2 = 9 m

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It can help to draw a diagram

answer: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0