<u>Answer:</u>
Value of cosθ is ±√7/3 .
<u>Step-by-step explanation:</u>
According to the Question , value of :

And , we know the identity of sine and cosine as ,
<u>Using</u><u> </u><u>,</u><u> </u><u>this</u><u> </u><u>ident</u><u>ity</u><u> </u><u>we</u><u> </u><u>have</u><u> </u><u>;</u><u> </u>

Now , here since θ is in 2nd quadrant and in 2nd quadrant cos is negative . Hence ,the value of cos will be :
Since you can only multiply the 2 and 4 together, you get 8x^2.
How do you reverse division? You multiply. So, the answer is multiplying by 28.
Answer:
a. y = -x² + 2x - 8
b. y = 
c. y = x³+ 3
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
Write the equation

Add the variables

Multiply 3 x 5

Subtract the parentheses

Subtract the numerator

Reduce the fraction with 3

Reduce the fraction again with 2

And there's your answer of 2!