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.
I’m pretty sore it’s c not sure tho
The correct option is the first one. Independent events are exactly what you're asking for: the information you have on one event doesn't affect in any way the probability of the other.
A classic example is the roll of two dice: assume that you roll the first one and get a 4. Does this imply anything on the outcome of the second die? No, all events 1,2,3,4,5,6 are still equally distributed, no matter the result of the first die.
Answer:
4,243 cm^3
Step-by-step explanation:
In this question, we are asked to calculate the amount of gift wrap needed to cover the box.
This is indirectly telling us to calculate the volume of the triangular prism.
Mathematically, the area of a triangular prism is the area of the base multiplied. y the height.
Area of the base is 1/2 * 12 * 10.4 = 62.4 cm^2
The volume is thus 62.4 * 68 = 4,243.2 cm^3
