Question

In a right ∆ABC, right angled at B, Angle ACB is twice Angle CAB. If BC=2 cm, find AC.
Please help me, Answer it fast, i will mark the brainliest​

Answer 1

please mark as brilliant answer

Answer 2

in tringle ABC A+B+C=180

1. A=x, B=2x,B=90
2. so we know sum of three angle in tringle will be 180
3. x+2x+90=180
4. 3x=180-90
5. 3x=90
6. x=30
7. 2x=60
8. cos theta=adjacent/hypotenuse
9. cos60=2/h
10. 1/2=2/h
11. h=4