Question

0. If sin (7 ∅ + 9°) = cos 2 ∅, find a value of ∅​

Answer 1

Answer:

Value of Q =9

Step-by-step explanation:

Sin (7Q+9) =cos 2Q

Sin (7Q+9)=sin (90-2Q)

Sin cancel with sin

Then, we get

7Q+2Q=90-9

9Q= 81

Q=9 degree

Hope it may help u