Question

if in the right angled triangle ABC, <b=90° ,bc= 7cm , AC -AB =1cm ,then find the values of sin A and Cos A​

Answer 1

I assumed that AB and AC are the same and since AC-AB=1cm that AC is 8cm.

sin A=7cm÷8cm

sinA=0.875

A= sin^-1 0.875

A= 61°

cos A= 7cm÷8cm

cos A= 0.875

A= cos^-1 0.875

A= 29°

I hope this helped