Measurement of side 'b' in a right angled triangle is equals to 20 units.
What is right angles triangle?
" Right angle triangle is an enclosed 2dimensional figure with three sides and three vertices and measurement of one of the angle is equals to 90°."
Formula used
Pythagoras theorem
(Hypotenuse)² =(adjacent side)² + ( opposite side)²
(a² - b²) = (a - b)(a + b)
According to the question,
In ΔABC , ∠C =90°
c² = a² + b²
c = 29 , a= 21
Substitute the value of a, b and c in the formula we get
(29)² = (21)² + b²
⇒ b² = (29)² - (21)²
⇒ b² = (29 -21)(29 +21)
⇒ b² = (8)(50)
⇒ b² =400
⇒ b =20
Hence, Measurement of side 'b' in a right angled triangle is equals to 20 units.
Learn more about right angled triangle here
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