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melamori03 [73]
3 years ago
11

HELP FAST PLEASE!!! Show that sin(x+pi)=-sinx

Mathematics
2 answers:
kondaur [170]3 years ago
7 0
Sin(a + b) = sin(a)cos(b) + sin(b)cos(a)
sin(x + pi) = sin(x)cos(pi) + cos(x)sin(pi)

sin(pi) = 0cos(pi) = -1

sin(x + pi) = sin(x)(-1) + cos(x)(0)
sin(x + pi) = -sin(x) + 0
I am Lyosha [343]3 years ago
6 0
Is it possible with only letters
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Answer:

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What is the slope of the line shown below?
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Item 4 Find the median, first quartile, third quartile, and interquartile range of the data. 132,127,106,140,158,135,129,138 med
Ket [755]

Answer:

133.5, 127.5, 139.5, 12

Step-by-step explanation:

order data:

106, 127, 129, 132, 135, 138, 140, 158

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The middle number: (8+1)/2 = 4.5 between the 4&5 numbers

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1.5 + 132 = 133.5

lower quartile (1st quartile):

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upper quartile(3rd quartile):

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Interquartile range:

139.5-127.5= 12

hope this helps

4 0
3 years ago
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