Question

If cos(40+x)=sin30 find the value of x​

Answer 1

Answer:Answer is in the attachment

Step-by-step explanation:Hope it helps you

Answer 2

we know that cos[90-Ф]=sinФ

using that we get sin[90-(40+x)]=sin30

so we cut of sin and get 90-40-x=30

so 50-x=30

so -x=-20

therefore we get x=20

_____hope u got satisfied with my answer________