Answer:
Step 1:
✔ Cofunction identity
Step 5:
✔ Sine difference identity
Step 6:
✔ Cofunction Identity
Step 7:
✔ Cosine function is even, sine function is odd.
Step-by-step explanation:
Three thousand six hundred fifty-one; 3000+600+50+1
Answer:
x will have to be 45 to make this true
Step-by-step explanation: