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kupik [55]
3 years ago
13

Which option equals tan 40°? Select all that apply.

Mathematics
1 answer:
Sonbull [250]3 years ago
4 0
Answers:
(sin40)/(cos40) and
(cos50)/(sin50)
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If you know how to do it, please help me out :)
Artemon [7]

Answer:

Answer in explanation.

Step-by-step explanation:

Lets take

y =  \frac{3}{4} x - 5

as L1.

Take L2 the line perpendicular to L1.

Standard form of equation of line:

y=mx+c, where m = slope and c = y-intercept.

Since L1 and L2 are perpendicular,

mL1 x mL2 = -1

Substitute mL1 into the equation,

3/4 x mL2 = -1

mL2 = -1 ÷ 3/4

mL2 = -4/3

L2 : y = mx+ c

Substitute y = 6, x = 8 and m = -4/3 into the equation,

6 =  -  \frac{4}{3} (8) + c \\ 6 = -  \frac{32}{3}  + c \\ c = 6 +  \frac{32}{3}  \\  = 16 \frac{2}{3}

therefore L2:

y =  -  \frac{4}{3}x   + 16 \frac{2}{3}

Lets take L3 as the line parallel to L1.

Since L3 and L1 are parallel,

mL3 = mL1 = 3/4

equation of line: y = mx+c

substitute y = 6, x = 8 and m = 3/4 into equation.

6 = ( \frac{3}{4} )(8) + c \\ 6 = 6 + c \\ c = 6 - 6 \\  = 0

therefore L3:

y =  \frac{3}{4} x

8 0
2 years ago
If f(x)=2x-6, then f^-1(x)=
mel-nik [20]
F(x) = 2x - 6

y = 2x - 6

Switching y and x and solving for y;

x = 2y - 6

2y = x + 6

y = \frac{x+6}{2}

Hence,

f^{-1} = \frac{x+6}{2}
7 0
3 years ago
Read 2 more answers
Describe the slope of the line. Then find the slope (-2,-3) , (3,-3)
Vikentia [17]
The slope would be 0 and it is a straight line line
8 0
3 years ago
8. Temperatures in degrees Celsius (C) may be changed to degrees Fahrenheit (F) by using the formula F = 1.8C + 32º. Find the te
pentagon [3]

Answer:

-40 °F = -40 °C

Step-by-step explanation:

(1) F = 1.8 C + 32

If the Fahrenheit and Celsius temperatures are the same, then

(2)        F = C     Substitute (2) into (1)

           C = 1.8C + 32     Subtract 1.8 C from each side

C – 1.8 C = 32                   Combine like terms

   -0.8C = 32                   Divide each side by -0.8

         C = -32/0.8

(3)      C = -40                  Substitute (3) into (1)

        F = 1.8(-40) + 32

        F = -72 + 32

       F = -40

So, -40 °F = -40 °C

The thermometer below shows that -40 °F = -40 °C.

8 0
3 years ago
Please help me with this and fast!
Serjik [45]

Answer:

16

5

O

I think

Step-by-step explanation:

7 0
3 years ago
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