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Rashid [163]
3 years ago
5

I need number 1 and 2 and 3 and 4 pleaseeeeer

Mathematics
1 answer:
Neporo4naja [7]3 years ago
7 0

Answer:

this is a test im not helping

Step-by-step explanation:

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PROVE THE FOLLOWING IDENTITIES.<br>​
3241004551 [841]

LHS=2t^2/1-t^2

RHS=2t^2/1-t^2

Hence left had side is equal

Step-by-step explanation:

Taking tan x and sec x in the terms of t=tan(x/2)

tan x=2t/1-t^2

sex x=1/cos x

therefore cos x=1-t^2/1+t^2

so sec x=1/1-t^2/1+t^2

sec x=1+t^2/1-t^2

Taking tan x and sec x in the terms of t=tan(x/2)

tan x=2t/1-t^2

sex x=1/cos x

therefore cos x=1-t^2/1+t^2

so sec x=1/1-t^2/1+t^2

sec x=1+t^2/1-t^2

LHS=tanx .tan(x/2)

      =2t.t/1-t^2

      =2t^2/1-t^2

RHS=sec x-1

       =1+t^2/1-t^2-1

       =1+t^2-1+t^2/1-t^2

       =2t^2/1-t^2

Therefore hence we proved LHS=RHS

      =2t.t/1-t^2

      =2t^2/1-t^2

RHS=sec x-1

       =1+t^2/1-t^2-1

       =1+t^2-1+t^2/1-t^2

       =2t^2/1-t^2

Therefore hence we proved LHS=RHS

4 0
3 years ago
Read 2 more answers
Phil is riding his bike. He rides 46 miles in 4 hours, 57.5 miles in 5 hours, and 69 miles in 6 hours. Find the constant of prop
FromTheMoon [43]

Answer:

The constant of proportionality k = 11.5.

The equation will be: \mathbf{y=11.5(x)}

Step-by-step explanation:

If x represents number of hours than y represents miles

We are given:

x        y

4         46

5         57.5

6         69

The constant of proportionality can be found using formula: k=\frac{y}{x}

Putting values and finding k

x        y               k (k=\frac{y}{x})

4         46            11.5

5         57.5         11.5

6         69            11.5

So, the constant of proportionality k = 11.5

Now, The equation will be:

k=\frac{y}{x}\\or \\y=kx\\Put \ k=11.5\\y=11.5(x)

So, the equation will be: \mathbf{y=11.5(x)}

4 0
3 years ago
How do you get the value of x7+8x+3-1+7
notka56 [123]

Answer:

first add the numbers that have the same variable s x7+8x=15x

then the numbers first add and then you subtract

1+7=8

3-8= -5

15x-5

3 0
3 years ago
Read 2 more answers
Simplify <br><br><br> -3z-(-z-2)}−3z−(−z−2)
Ivenika [448]

Answer:  -4z+4

Step-by-step explanation: You can use math , way for quicker help

6 0
4 years ago
What is the domain and range of (2)/(x^2-2x-3)?
givi [52]

Domain: All real numbers or (-infinity, infinity)

Range: [-8, infinity)

4 0
3 years ago
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