Question

if angle A and angle B are acute angle such that CosA= CosB ,then show that angle A= angle B .
send me solution ​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Cos A = cos B.

cos a = b1/h1

cos b = b2/h2

so b1/h1 = b2/h2

=>b1/b2 = h 1/ h2

since sides are proportional so triangles are proportional

so angle a = angle b