Question

If ΔABC is right angled at C, then the value of cos(A+B) is​

Answer 1

Answer:

given : angle C = 90 degree

A+B+C= 180 ( ANGLE SUM PROPERTY )

B+C= 180-90=90 degree

So , cos 90 = 0

so your answer is 0

hope it helps you !!!

:)

Answer 2

Answer:

0

A+B=90,so cos90=0, since sum of two angel except right angle be 90.