Answer:
what equation. . .
Step-by-step explanation:
.......
Answer:
1/3
Step-by-step explanation:
Move all terms not containing y to the right side of the equation.
y = -17
Yes! 3x3= 9. Therefore, 3 goes into nine 3 times. So the whole number would be 3.
Answer:

Step-by-step explanation:
To solve this problem you must know the formula of subtraction of angles for the function cosx.
The formula is:

We can write 30° as: 45° - 15°
Then:

Using the formula for subtraction of angles we have:

Notice that we have achieved the expression shown in the statement
Finally:
