Question

in the rectangle pqrs ,angle sqr=60°and qr=4cm find sr qs

Answer 1

Angle sqr = 60° and

qr= 4cm

cos 60°= 1/2

let qs = x

So , 1/2 = 4/ x

x= 8

sin 60° = √3/2

let sr = y

So , √3/2 = y/8

y= 4√3