All categories

3 years ago

Use a calculator to evaluate cot π/5.

1 answer:

7 0

Pi divided by five is roughly .63. I say "roughly" because pi is infinitely long so it's impossible to get an exact answer, but a common pi length would be 3.14159.

You might be interested in

What is the average percentage of 48 and 80

vlabodo [156]

I know this is probably too late but its 60%

8 0

3 years ago

What is 5 divided by 3/7

DENIUS [597]

it would be 35/3 or 11 2/3

4 0

3 years ago

Find the value of the expression

sashaice [31]

Answer:

Step-by-step explanation:

t=1

u=2

t+8+u+8+1=1+8+2+8+1=20

8 0

2 years ago

What is the degree of x^4-3x+2 A.3 B.2 C.4 D.5

Viktor [21]

The answer is C.

Look at all the exponents for the x's. What is the highest exponent? It's 4, making this a 4th degree polynomial.

5 0

3 years ago

L1 and L2 are two straight lines. The origin of the coordinate axes is O. L1 has equation 5x + 10y = 8 L2 is perpendicular to L1

Ivenika [448]

Answer:

40 sq units

Step-by-step explanation:

$5x + 10y = 8\\\Rightarrow y=\dfrac{8-5x}{10}\\\Rightarrow y=-\dfrac{1}{2}x+\dfrac{2}{5}$

Slope of $L_2$ is $m_2$

$m_1m_2=-1\\\Rightarrow m_2=-\dfrac{1}{m_1}\\\Rightarrow m_2=-\dfrac{1}{-\dfrac{1}{2}}\\\Rightarrow m_2=2$

$L_2$ passes through point $(8,6)$

$y-6=2(x-8)\\\Rightarrow y=2x-16+6\\\Rightarrow y=2x-10$

Point at x axis where $L_2$ intersects is

$0=2x-10\\\Rightarrow x=\dfrac{10}{2}\\\Rightarrow x=5$

Point $A$ of the triangle will be $(5,0)$

$L_2$ intersects line $x=-3$ . The point is

$y=2\times(-3)-10\\\Rightarrow y=-6-10\\\Rightarrow y=-16$

The points of the triangle are $A(5,0), O(0,0), B(-3,-16)$

Area of triangle is given by

$A=\dfrac{|A_x(B_y-O_y)+B_x(A_y-O_y)+O_x(A_y-B_y)|}{2}\\\Rightarrow A=\dfrac{|5(-16-0)+-3(0-0)+0(0-(-16))|}{2}\\\Rightarrow A=40\ \text{sq units}$

The area of the triangle is 40 sq units.

6 0

3 years ago