Cos x = sin (90 - x)
cos 63 = sin (90 - 63)
cos 63 = sin 27
x = 27
Answer:
Step-by-step explanation:
It goes 20 km to the west.
Then it turns around
And it goes 10 km west.
The net result is that it is 10 km from the starting point and it is east of Dasma.
Answer: 72 cars.
Step-by-step explanation:
Let be "x" the number of toys that Moby had to start with.
According to the information given in the exercise, Moby sold half his toy car collection. This can be represented with the following expression:

Then he bought 12 more cars, giving a total amount of 48 toy cars.
Therefore, the equation that represents this situation is the equation shown below:

Now you must solve for "x" in order to find its value.
You get that this is:

Could you please send a picture of the polygon?
The answer is 3: 3+5+8=5+8+3