Question

A,B are complementary angles then cos^A+ cos^B= ……………​

Answer 1

Answer

B=1

Step-by-step explanation:

cos  

2

A+cos  

2

B

And A and B are complementary  

So  

A+B=90,A=90−B

(cos(90−B))  

2

+cos  

2

B

=sin  

2

B+cos  

2

B=1