Answer:
- -1
- 0
Step-by-step explanation:
1. cos(π) = -1
2. sin(π) = 0
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It is useful to memorize the table below.
Answer:
C. Multiply 3 by 18
Step-by-step explanation:
Further explanation

Answer:
2/3
Step-by-step explanation:
Do 1/3 divided by 4/5 first.
So we are going to flip 4/5 to 5/4. The equation is now:
1/4+1/3 times 5/4
Now we are going to do the multiplication since multiply and division is before adding and subtraction.
1/3 times 5/4 = 5/12
Now we have to add 1/4+5/12
With adding ( and subtracting) we have to find the common denominator which is 12
So now we have 3/12 + 5/12 = 8/12 which reduces to 2/3
Question 1snd 2 is not clear but this is the answers for 3,4,5 picture attached