please answer the above question
Attachments:
Answers
Answered by
0
Answer:
see bro since angle B is 90° then (A+C) should also be 90° because the sum of all angles of a triangle should be 180°
therefore cos(A+C) = cos90° = 1
so option b is your answer
Answered by
0
Answer:
In a triangle, sum of all angles is 180°
A + B + C = 180°
It is given that B = 90°
A + 90 + C = 180°
A + C = 180° - 90°
A + C = 90°
Cos(A + C) = cos 90° = 0
(a) 0 is the correct answer
Similar questions