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BARSIC [14]
3 years ago
13

I need qestion number d) solution please help me​

Mathematics
1 answer:
natita [175]3 years ago
8 0

Answer:

It is an identity, the proof is in the explanation

Step-by-step explanation:

csc(A)-cot(A)=tan(A/2)

I'm going to start with right hand side

tan(A/2)=(1-cos(a))/(sin(a))                half angle identity

tan(A/2)=1/sin(a)-cos(a)/sin(a)         separate fraction

tan(A/2)=csc(a)-cot(a)                     reciprocal and quotient identities

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Need help I really do pls my going to get a f and I don’t want to repeat
timofeeve [1]

1. -2<2 2. -4> -5. -20<20. -7>-8. -10<-1. 50>-100

7 0
3 years ago
Write an equation of the line that passes through (−1,3) and is parallel to the line y=2x+2.
MA_775_DIABLO [31]

The equation of the line that passes through (−1,3) and is parallel to the line y = 2x + 2 in slope intercept form is y = 2x + 5

<h3><u>Solution</u>:</h3>

Given that line passes through (-1, 3) and parallel to line y = 2x + 2

We have to find the equation of the line

Let us first find the slope of the line

<em><u>The slope intercept form of line is given as:</u></em>

y = mx + c  ---- eqn 1

where "m" is the slope of the line and "c" is the y-intercept

Comparing the given line equation y = 2x + 2 with y = mx + c,

We get slope "m" = 2

The slope of parallel lines are equal

Hence slope of the line which is parallel to y = 2x + 2 is also 2

Now let us find the equation of line with slope "m" = 2 and passes through point (-1, 3)

Substitute (x, y) = (-1, 3) in eqn 1 to find value of "c"

3 = 2(-1) + c

3 = -2 + c

c = 5

Now substitute "c" = 5 and m = 2 in eqn 1 to get equation of required line

y = 2x + 5

Thus the equation of line in slope intercept form is y = 2x + 5

4 0
3 years ago
Help me please thank you
Ainat [17]
First one is -8. 

Second one, I can't tell because I don't see it

5 0
3 years ago
Read 2 more answers
Need help on this...
Alex Ar [27]

She needs at least 130 points, so 130 - 75 (that she is earning from the sign up) = 65 points.

65 : 5,5 = 11,81 ≈ 12

So she has to sign up and visit he movie theatre at least 12 times to earn a movie ticket.

4 0
3 years ago
25000000 in standard form
Elan Coil [88]

Answer:

2,500,000 This is in standard form.

2.5 x 10^6  This is in scientific notation.

Step-by-step explanation:

6 0
3 years ago
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