In ∆ABC is a right angled at C, then the value of cos(A+B) is
A)0
B)1
C)1/2
D)Not Defined
Answers
Answered by
1
Answer:
a)0 is the correct answer
Answered by
0
Answer:
Step-by-step explanation:
MARK IT THE BRINALIEST
A+B=180°-C
A+B=180°-90°
A+B= 90°
Therefore,cos (A+B)=cos90°
=0
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