Answer:
Below.
Step-by-step explanation:
I'll write sin x as s and cos x as c so we have:
(1 + s +c)/(1 + s - c) = (1 + c)/s
Cross multiplying:
s + s^2 + cs = 1 + s - c + c + cs - c^2
s + s^2 + cs = 1 + s + cs - c^2
s^2 + c^2 + s - s + cs - cs = 1
s^2 + c^2 = 1.
- that is sin^2 x + cos^2 x = 1 which is a known identity.
Therefore the original identity is proved.
The graph is crossing the x-axis at x = 0 and x = 5
This means, x and x - 5 are the factors of the polynomial.
A polynomial can be expressed as the product of its factors. So the above polynomial can be expressed as x(x-5)
Thus, the correct answer to this question is option A
Answer:
x=8
Step-by-step explanation:
x= -5/2=-2 1/2= -2.5. If you add all of those up you will get x=8
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Hope this helps and have a great day :)</em></h2>
