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Alexus [3.1K]
3 years ago
12

If sin x = 3/5, calculate tan x​

Mathematics
1 answer:
valkas [14]3 years ago
3 0

Answer:

tan(x)=-+(3/4)

Step-by-step explanation:

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4 0
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How to find Sin67/2 and 97/2 without using the calculator? I need a step by step explanation plz...​
yaroslaw [1]
10 for for for for for f
4 0
3 years ago
Pls help me really bad at math
MrRa [10]
I’m not going to give you the exact answers because I believe you can do it :)))

So what you should do is 180 divided by 1/5

When people write a slash (/) it means divide

And a fraction is the same as saying 1 divided by 5

180 divided by 3/10

180 divided by 1/10

180 divided by 2/5
5 0
3 years ago
How many solutions does the system have? <br> y=−2x+1 <br> y=−2x^2+1
balu736 [363]

Answer:

The system has two distinct solutions.

Step-by-step explanation:

The given system of equations are:


y=-2x+1--(1)

and

y=-2x^2+1---(2)


In order to determine the number of solutions the two equations have, we need to equate the two equations to obtain,



-2x^2+1=-2x+1


We now group all terms on the left hand side and equate everything to zero.

-2x^2+2x=0

x^2-x=0


This is now a quadratic equation in x^2 with a=1,b=-1,c=0.

At this stage we check the number of solutions using the discriminant.

D=b^2-4ac


\Rightarrow D=(-1)^2-4(1)(0)=1


Since the discriminant is greater than zero, the equation will have two distinct roots.

Therefore the system of equations has exactly two distinct solutions.


If you wish to see these solutions, you can continue as follows;

We factor x to obtain,

x(x-1)=0


\Rightarrow x=0,x-1=0



\Rightarrow x=0,x=1


When x=0,y=-2(0)+1


Then we have,

x=0,y=1


When x=1,y=-2(1)+1


Then we have,

x=0,y=-1


See graph






8 0
3 years ago
Evaluate 3x^2 - x for x = -2​
Butoxors [25]

Answer:

3x^2 - x

3 \times  - 2 \times  - 2 - 2

(3 \times  - 2 \times  - 2) -  ( - 2)

12 + 2 = 14

4 0
3 years ago
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