Answer:
See explanation
Step-by-step explanation:
sin(α + β) = sin α cos β + sin β cos α
sin(α - β) = sin α cos β - sin β cos α
[ sin(α + β) + sin(α - β)] = [sin α cos β + sin β cos α + sin α cos β - sin β cos α]
= [2 sinα cos β]
= sin α cos β = [ sin(α + β) + sin(α - β)]
Answer:
5 1/4 .
Step-by-step explanation:
Given:
Celia made 3 1/2 cups of rice.
A serving of rice is 2/3 cup.
Now, to find the number of servings Celia make.
Celia made
So, to get the number of servings we use unitary method:
If 2/3 cup of rice is of 1 serving.
So, 1 cup of rice is of = =
Then 7/2 cup of rice is of
Thus, 7/2 cup of rice is of servings.
Therefore, Celia make servings.
Step-by-step explanation:
The chances for my friend to be in my group are low given the probability, I say no.