Hum, this problem was difficult. You use the next expression to solve this problem. \[\cos (A - B) = \cos A \cos B + \sin A \sin B \] \[\cos (A + B) = \cos A \cos B - \sin A \sin B\] \[\cos (A - B ) - \cos (A +B ) =2 \sin A \sin B\] So \[\sin A \sin B = 0.5 \left( \cos(A - B) - \cos(A + B) \right)\] A = 1.8 x, B = 0.5 x \[\sin (1.8x) \sin (0.5x) = 0.5\left( \cos(1.8-0.5)x - \cos(1.8+0.5)x \right)\]\[= 0.5 \left( \cos(1.3x) - \cos (2.3x) \right)\] It's finish !!
Answer: 48
Step-by-step explanation:
60 as a fraction= 60/1
We are going to multiply 60/1x4/5=240/5
The we are going to divide 240/5 and 5/5+ 48/1
and 48/1 is equal to 48
Answer:
<h2>There's only one person who has a tie, wears a hat and is not from North.</h2>
Step-by-step explanation:
Givens
- There are 4 people in the group.
- 3 of them have tie.
- 3 of them wear a hat.
- 3 of them are from the North.
- But, just one of them has a tie, wear a hat and is from the Nprth of Mexico City.
From the given information you can notice that only one of them is not from the North, and the one that has all three qualities is from North.
Therefore, there's only one person who has a tie, wears a hat and is not from North.
Answer
1260
A baseball team sells tickets for two games.
The ratio of sold tickets to unsold tickets for the first game was 7 : 3. For the second game, the ratio was 13 : 2. There were 240 unsold tickets for the second game. How many tickets were sold for the first game?
Answer:
-7k+21
Step-by-step explanation:
