Question

the figure shows a quadrilateral ABCD where angle ABC=Angle BCD=90 degree given that AB=4m and DA=DC=7m Find Angle ADC​

Answer 1

Answer:

64.62°

Step-by-step explanation:

Draw parallel of BC from A which cut DC name the point

now AB=EC

So DE=3 m (as AB=EC=4)

and AD=7 m

So cos(ADC)=3/7

so angle ADC=64.62°

Answer 2

Answer:

64.60

Step-by-step explanation:

See the attachment