Question

Find x, if sin 3x = cos (x – 30°), 0  3x  90°.​

Answer 1

Answer:

30 degrees

Step-by-step explanation:

sin 3x=cos (x-30)

=>cos (90-3x)=cos (x-30) {sin A=cos (90-A)}

=>90-3x=x-30

=>x+3x=90+30

=>x=30 degrees