Step-by-step explanation:
cot A + cot C
Write in terms of sine and cosine:
cos A / sin A + cos C / sin C
Common denominator:
(cos A sin C + cos C sin A) / (sin A sin C)
Angle sum formula:
sin(A+C) / (sin A sin C)
Angles of a triangle add up to π:
sin(π−B) / (sin A sin C)
Shift identity:
sin B / (sin A sin C)
Law of sines:
sin B / ((a sin B / b) × (c sin B / b))
sin B / (ac sin² B / b²)
b² / (ac sin B)
From law of cosine:
b² = a² + c² − 2ac cos B
b² = 2b² − 2ac cos B
b² = 2ac cos B
b² / (ac) = 2 cos B
Substituting:
2 cos B / sin B
2 cot B
Answer:
Step-by-step explanation: the BESt is B BECAUSE SHE ASK FOR 8 PRINTING FOR $234 AT AN ESTATE SALE THE SMALLER PAINTING WERE $25 EACH WHILE THE LAGER PAINTING WERE $40
Is the system of equations independent inconsistent or dependent?
An independent system of equations has exactly one solution (x,y) . An inconsistent system has no solution, and a dependent system has an infinite number of solutions.What are the 3 types of system of equations?
There are three types of systems of linear equations in two variables, and three types of solutions.
An independent system has exactly one solution pair. The point where the two lines intersect is the only solution.
An inconsistent system has no solution. ...
A dependent system has infinitely many solutions.
(-1, 3)
<h3>What is Meant By Graphing Functions?</h3>
Graphing functions is drawing the curve that represents the function on the coordinate plane. If a curve (graph) represents a function, then every point on the curve satisfies the function equation.
According to the question,
The following graph represents the linear function f(x) = x -2
Take any point on this line, say, (-1, 3).
Let us substitute (-1, 3) = (x, y) (i.e., x = -1 and y = 3) in the function f(x) = -x + 2 (note that it can be written as y = x - 2).
Then
3 = -(-1) + 2
3 = 1 + 2
3 = 3, thus, (-1, 3) satisfies the function.
In the same way, you can try taking different points and checking whether they satisfy the function. Each and every point on the line (in general called "curve") satisfies the function.
Learn more about Graphing Functions here: brainly.com/question/9834848
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4.8 students take bus
not sure if right though
but hope it helps c:
