Question

In AABC, AB-10cm, BC-10cm and AC-10√2Cm. Then the angle A is
A) 90 B)60° C)45
D)50​

Answer 1

Step-by-step explanation:

AC^2=AB^2+BC^2 this rule followed by your questions values

then b must be equal to 90degress

angleA=?

let sinA=opposite side/hypothesis

10/10√2=1/√2

A=45 degrees