Question

in a right angle ∆lmn,lm =90 if l (LM) = 13 cm l (LM) = cm find the lenth of semi mn​

Answer 1

Answer:

in right angle triangle LMN,<M=90° hence side LN is the

hypotenuse

According to Pythagoras theorem,

1(LN)²=1(MN)²+1(LM)²

=>(20)²=1(MN)²+(12)²

=>400=1(MN)²+144

=>1(MN)²=400-144

=>1(MN)²=256

=>1(MN)²=(16)²

=>1(MN)=16

therefore length of seg MN=16CM