Question

cos(40+x) = sin 30 find the vlaue of x​

Answer 1

Answer:

45

Step-by-step explanation:

mark as brain list...

Answer 2

Answer:

x=20

Step-by-step explanation:

cos(40+x)=sin 30

=>cos(40+x)=sin(90-30)

=>cos(40+x)=cos 60

=>40+x=60

=>x=60-40=20