Question

Please tell me this answer ​

Answer 1

Answer:

15

Step-by-step explanation:

as it is a right angled triangle

use Pythagoras theorem

let value of AB be x

8^2 +x^2 = 17^2

x=15

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Answer 2

Step-by-step explanation:

we get to know that the triangle is right angled at c and so it is a right angled triangle...... we can use pythagoras theorem,

pythagoras theorem-square of length of hypotenuse of triangle is equal to the sum of the square of the remaining two sides

hypotenuse is the side opposite to the right angle.(it is the longest side of the triangle)

a^2(side 1)+b^2(side 2)=c^2(hypotenuse)

AB is the hypotenuse of this triangle as the triangle is right angled at c

(17)^2=(8)^2+BC^2

289=64+BC^2

bring 64 to the other side.

289-64=225

225=BC^2

BC =√225=15