Question

In a AABC, if
B = 90°, AB = ccm, BC
AC = zcm , then
yсm and​

Answer 1

Answer:

By pythagoras theorem,

AC  

2

=AB  

2

+BC  

2

 

AC  

2

=9+16=25

AC=5 cm

BD is the altitude from B onto AC

We have the formula for altitude,

h  

2

 

1

​  

=  

a  

2

 

1

​  

+  

b  

2

 

1

​  

 

Applying the same for △ABC

BD  

2

 

1

​  

=  

AB  

2

 

1

​  

+  

BC  

2

 

1

​  

 

BD  

2

 

1

​  

=  

3  

2

 

1

​  

+  

4  

2

 

1

​  

 

BD  

2

=  

(3  

2

)+(4  

2

)