Question

A
ii) In A ABC, LABC = 90°, AC = 74, BC = 70.
Complete the following activity to find AB.
A ABC is a right angled triangle.
By Pythagoras theorem,
AC² = AB² + BC²
74
742 = AB? +
ABP = 5476- -D
B
70
C с
AB?
AB =​

Answer 1

Answer:

63

Step-by-step explanation:

triagle ABC is a right angled triangle

By Pythagorean theorem,

AC2 =AB2+BC2

74sqaure=AB2+70square

AB2=5476-4900

AB2=573

AB=√573

AB=√3×3×3×3×7

AB=√3×3×7

AB=63

Answer 2

The final answer is 24

Given: In triangle ABC ∠ABC = 90°  

AC = 74 and BC =70

To find: complete the steps to find side of the triangle

Solution: Δ ABC is a right angled triangle.

By Pythagoras theorem, AC² = AB² + BC²

From given data ⇒ 74² = AB² + 70²   [ ∵ BC = 70² ]

⇒  AB² = 5476 - 4900

⇒  AB² = 576                                    

⇒  AB² = 24²

⇒  AB = 24

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