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.
Answer:
-50
Step-by-step explanation:
it could be X-50=?
Answer:
X-16 the first one
Step-by-step explanation:
The first one is equal to x-4
Liam = 4t = 5.50
Zachary = 3t = 6.50
7t = 12.00
t = 12.00/7
t = 1.71
T= price of the taco spend the same amount
Answer:
m= 117
Step-by-step explanation:
