Question

please answer this question​

Answer 1

Answer:

( Please mark as Brainliest )

cos(A+B) = 0

Step-by-step explanation:

ABC is a right angled triangle,

So, A+B+C = 180

=> A+B = 180-C

=> A+B = 180-(90)                                                  ( Since C=90 )

=> A+B = 90

Now, cos(A+B) => cos(90) = 0                             ( Since A+B=90 )

Therefore, cos(A+B) = 0.