10:40 because yellow goes before the total. Or it is 25%
110
101 thats the answer if I understood correctly
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.
The ans is D
The reason is using matrix rule putting x y and z coffecients together