Question

I really have no idea how do this so an explanation with an answer would be really helpful :)

Tysm

Answer 1

So, BC = 5.6 cm

Explanation:

Since its a right angled triangle,

taking 62 as reference angle,

cos62 = b/h

or, cos62 = AB/BC

or, cos62 = AB/12cm

or, cos62×12cm = BC

so, BC = 5.63