Question

Find AD ?

Answer 1

Not so sure about this one but maybe 75cm?

Explanation:

Because `<CAB` is 90 degrees, by using the Pythagorean's theorem, CB should be 1.25 meters, but because BD is also the same amount, They are the same line. That means AD and CA are also the same line.

Answer 2

`AD=60cm`

Explanation:

In rt `DeltaABC,`

`tanB=(AC)/(AB)=75/100=3/4`

`B=tan^(-1)(3/4)=sin^(-1)(3/5)`

Now in rt `DeltaADB,`

`rarrsinB=(AD)/(AB)`

`rarrsin(sin^(-1)(3/5))=(AD)/100`

`rarr3/5=(AD)/100`

`rarrAD=60`cm