Answer:
im not sure sorry
Step-by-step explanation:
also you can just search it up:)
Answer:
2
Step-by-step explanation:
24/12 = 2
Answer:110 degrees
Step-by-step explanation:
Answer:
cos 78⁰.
Step-by-step explanation:
Use cos 2A = cos^2 A - sin^2 A
so cos^2 39 - sin^2 39 = cos (2*39) = cos 78.