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motikmotik
3 years ago
10

Prove that sin x /(cosec x-cotx) = 1+ cos x​

Mathematics
1 answer:
anastassius [24]3 years ago
3 0
Here’s a photo of my working out. There’s heaps of ways to do this but this is what I got...

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If sin 115 degrees≈ 0.91 and cos 115 degrees = -0.42, then sin -115 = ____ and cos -115 degrees =_____
mafiozo [28]

Answer:

If sin 115 degrees≈ 0.91 and cos 115 degrees = -0.42, then sin -115 = -0.91 and cos -115 degrees = 0.42

Step-by-step explanation:

3 0
4 years ago
Plant A is 18 inches tall after one week 36 inches tall after two weeks 56 inches tall after three weeks Plan B is 18 inches tal
KATRIN_1 [288]
So what is your question
8 0
4 years ago
A piece of pipe is 303/4 inches long. If five pieces, each 41/3 inches long, are cut from the pipe, how many inches of pipe rema
galina1969 [7]
So, what is the total lenght of the pieces that wer cut off?

we multiply the lenght by the number:

4 \frac{1}{3}*5=20+\frac{5}{3}=21\frac{2}{3}

and we subtract this from the original pipe, that is

30\frac{3}{4}-21\frac{2}{3}

we need to bring the two fractions to the same denominator (by multiplying the fraction art in the first by 3 and 4 the second):

30\frac{9}{12}-21\frac{8}{12}=9 \frac{1}{12}

so the correct answer is D!




3 0
3 years ago
A man jogs to the shop and back in half an hour on the way he jogs at 4m/s and on the way back he jogs at 5m/s ignoring time spe
pochemuha
Ratio 4:5
There are 9 total.
30 mins = 1800 secs. 
1800 divided by 9 = 200
200 secs = 3mins 20secs
200 is one "part" of the ratio, so multiply it by 4, then 5
800:1000
                           This is the important one
                                           V
13mins, 20secs: 16mins 40secs
Distance is speed x time,
16mins x 4 = 64
40 secs = 2/3
 x 4 = 1.6666
Distance to shop - 65.6m

5 0
3 years ago
Explain why x^2 = -81 does not have a solution.
Evgesh-ka [11]

Remember, the graph of a line represents every point that is a possible solution for the equation of that line. So when the graphs of two equations cross, the point of intersection lies on both lines, meaning that it is a possible solution for both equations. When the graphs of two equations never touch, there are no shared points and there are no possible solutions for the system. When the graphs of two equations lie on top of one another, they share all their points and every one is a possible solution.

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6 0
3 years ago
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