Question

cm.
2. Triangle XYZ is right-angled at vertex Z. Calculate the length of YZ, if
13 cm and XZ = 12 cm.
XY​

Answer 1

Answer:

Step-by-step explanation:

Here at vertex Z, there is right angle

Therefore,

By pythagoras theorem

( {xy}^{2} ) = ( {xz}^{2} ) +(  {zy}^{2} )

Putting values,

( {13}^{2} ) = ( {12}^{2} ) + ( {zy)}^{2}  

169 = 144

169 = 144 + ( {zy}^{2} )

169 - 144 = ( {zy)}^{2}  

( {zy}^{2} ) = 25

zy =  \sqrt{25}  

zy = 5cm

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