You can first use the fundamental trigonometric identity:
sin(x) ^2 + cos(x) ^2 = 1
=> cos(x) ^2 = 1 - sin(x) ^2
=> cos(x) ^2 = 1 - (-4/5)^2 = 1 - 16/25 = (25 - 16) / 25 = 9 /25
=> cos (x) = +/ - √ (9/25) = +/- 3/5
Now, analyze the sign.
In the fhird quadrant the cosine is negative, so the answer is cos(x) = - 3/5.
Answer: option C. - 3/5
A. 2 2/3
B. 3/8
Hope this helped
For this equation, you'll need to set x to 0 and solve from there.
First step is to solve the parentheses and then square the answer. Your equation will look like this:
Next, you will multiply -16 and 1, and then add the product of that by 21. Your answer will be
In short, the ball is thrown from 5 feet above ground.
Answer:
x³ - 4x² - 16x + 24
Step-by-step explanation:
Step 1: Write expression
(x - 6)(x² + 2x - 4)
Step 2: Distribute each term
x³ + 2x² - 4x
-6x² - 12x + 24
Step 3: Combine
x³ + 2x² - 4x - 6x² - 12x + 24
Step 4: Combine like terms
x³ - 4x² - 16x + 24
23. -7
24. greater. For example, when u subtract -5 from 10, the answer is 15, which is greater than 10
25. the pattern each term is subtracted 5 from it's previous term