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➷ Just work with what is inside the parenthesis
Also, move around the terms to help it make more sense:
(cosA cosB - cosA cosB + sinA sinB + sinA sinB)
As you can see, the 'cosA cosB' would cancel out through subtraction.
Now we have this:
(sinA sinB + sinA sinB)
This is just two sets of sinA sinB so it can be written as:
(2 * sinA sinB)
Simply place the values outside the parenthesis back there to get the answer
SinA sinB = 1/2 * (2 * sinA sinB)
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Answer:
x=16
Step-by-step explanation:
1. Simplify 9/12 to 3/4.
2. Multiply both sides by x.
3. Simplify 3/4x to 3x/4
4. Multiply both sides by 4.
5. 12x4=28
6. Divide both sides by 3.
7. Simplify 48/3 to 16.
Answer: 4
Step-by-step explanation:
√x imaginary if and only if x < 0
√(x-5) imaginary ifi x-5 < 0
x<5
4 is the largest integer < 5.
Start by distributing -8 to (8-3n) and -5 to (n+1). The equation becomes:
-64+24n-5n-5=4n-1-8
Next, you can simplify both sides of the equation. It will look like:
-69-19n=4n-9
Next, add 19n to both sides so you isolate the variable on one side of the equation. You will get:
-69=23n-9
Now, you can proceed to solve this like any other two-step equation. Add 9 to both sides:
-78=23n
Divide both sides by 23:
-3.3913=n
Hope this helps!
Answer:
X=-8
Y=10
Step-by-step explanation: