If angle A and angle B are acute angle such that cosA =cosB , then sho

1.	If angle A and angle B are acute angle such that cosA =cosB , then show that ang. A =ang. B
Answer» Draw a triangle ABC in which BC should be Base and triangle is at right angle at ang.CNow in triangle ABCCos A= side adjacent A/Hypotenuse= AC/ABSimilarly,COS B = side adjacent B/Hypotenuse= BC/ABGiven thatCOS A= COS BAC/AB=BC/ABAC=BCIN A TRIANGLE OPPOSITE SIDES ARE EQUALANG B= ANG APROVED..\xa0

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