Question

7
IF angle ABC is right angled at C. then the value of cos (A+B) is
(A)0
(B) 1
(C)/1/2
(D)√3/2

2​

Answer 1

Answer:

the answer of this question is 1

Answer 2

In the triangle C = 90°

A + B + C = 180°

--> A+B = 180°-C = 180° - 90°

--> A+B = 90°

--> cos(A+B) = cos(90°) = 0

Hence option A is correct.