1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GenaCL600 [577]
3 years ago
5

Does -cos(120)=cos(-120)?

Mathematics
2 answers:
Step2247 [10]3 years ago
6 0
No, -Cos(120) is equal to 5, while Cos(-120) is equal to -5.

Hopefully this helps!
larisa [96]3 years ago
3 0
No because 120 is positive and -120 is a negative
You might be interested in
Line M passes through point (3,1) and is perpendicular to the line of the equation y=3x+4. Which equation describes the graph of
zheka24 [161]

Answer:

y = -1/3x + 2

Step-by-step explanation:

The gradient of the given line is 3 because (y = mx +c where m is the gradient)

Therefore, to find the gradient of the perpendicular line (at 90 degrees), you need to find the negative reciprocal.

The negative reciprocal of 3 is -1/3 because imagine if 3 = 3/1, to get the reciprocal, you flip it, and to get the negative, you just flip the sign.

Now we know that Line M is y = -1/3x + c, we need to find the y-intercept.

To do this, just input the point (3,1) into y = -1/3x + c, to get c. This is because we know (3,1) is on the line from the question.

So it would be 1 = (-1/3 x 3) +c

Which would be 1 = -1 +c

And so c = 2

Put everything together and you get y = -1/3x + 2

8 0
3 years ago
Solve the simultaneous equation 3x²-xy=0, 2y-5x=1​
White raven [17]

Answer:

exact Form:(0,),(1,3)

Equation Form: ( 0, )

             x=1         y=3

Step-by-step explanation:

6 0
3 years ago
andrea uses 3.12 cups of flour in a recipe that makes 8 key lime cupcakes. Corey uses 2.52 cups of flour in a recipe that makes
Rina8888 [55]

Answer:

0.03 more flour per cupcake

Step-by-step explanation:

3.12/8 = 0.39

2.52/7 = 0.36

0.39 - 0.36 = 0.03

Hope this helps c:

6 0
2 years ago
12 inches to 36 inches
Schach [20]
You have to Multiply times 3...
12•3=36
36/12=3
3 0
3 years ago
I need to find t<br> -13.9t-22.3=30.8t+2
Mars2501 [29]

Answer:

t=−0.543624 lemme know if i was right

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • A soccer player kicks the ball down the field to a teammate. The height of the soccer ball above the ground, h, in relation to t
    13·2 answers
  • Given the inequality -8 &lt; 2, explain what happens when you multiply or divide both sides by 2 and what happens when you multi
    13·2 answers
  • an exterminator must treat the perimeter of a house for insects if the house is 90 feet long and 30 feet wide what is the total
    8·1 answer
  • Six red marbles, 4 green marbles and 2 blue marbles are placed in a jar. What is the probability of selecting a red marble and t
    11·1 answer
  • Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest
    15·1 answer
  • What is the perimeter of the triangle shown on the coordinate plane,to the nearest tenth of a unit ?
    9·1 answer
  • Which points in the graph are in quadrant IV
    5·2 answers
  • What is the correct answer to this? Please help! Thank you so much ☺️
    12·2 answers
  • You roll two number cubes. Let event A = You roll an even number on the first cube. Let event B = You roll a 6 on the second cub
    13·1 answer
  • In the diagram below, if AB = 25, AC = 15, and BD = 5, then find the length of DC.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!