Question

Question is above in the attachments. (if you know the answer then please solve) ​

Answer 1

Step-by-step explanation:

let

angle ACD = p

angle DAC/BAC=q

angle ABC/DBC = r

angle ADC = s

angle BDC = t

angle ACB=k

mark this to not get confused

in ️ADC

p+s+q=180⁰

p+90⁰+q=180⁰

p+q=180-90=90⁰

p+q=90⁰

in ️ACB

q+k+r=180⁰

q+90+r=180⁰

q+r=180-90=90⁰

q+r=90⁰

p+q = q+r

p = r

in ️ADC & ️CDB

s = k

therefore ️ADC ~ ️CDB

AD = CD

CD = BD

crossmultiply

CD² = AD*BD