Question

plese solve step by step​

Answer 1

Answer:

AEC =  75 degrees (alternate interior angles)

AEC+ECD+ACB = 180 degrees (angle of a straight line)

=> 40 +75+  ACB = 180 degrees

=> 115+ ACB = 180

=>  ACB = 180 - 115

=>  ACB = 65

now, in triangle abc,

ACB + BAC + CAB = 180 (sum of angles in a triangle)

=> 65 + 75 + CAB = 180

=> 140 + CAB = 180

=>  CAB = 180 - 140

=>  CAB = 40

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