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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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Aflati al 2013 lea termen al unei progresii aritmetice cu termenul al treilea egal cu 12 si diferenta a doi termeni consecutivi,
KATRIN_1 [288]

Răspuns:

8052

Explicație pas cu pas:

Al treilea termen al unei progresii aritmetice:

T (n) = a + (n - 1) d

Unde ;

a = primul termen; d = diferență comună = 4; n = al treilea termen (numărul termenului)

Al treilea (3) termen:

T (3) = a + (3-1) 4

T (3) = 12

12 = a + 2 (4)

12 = a + 8

12 - 8 = a

4 = a

Prin urmare, primul termen = a

Al 2013-lea mandat;

T (2013) = a + (2013-1) d

T (2013) = 4 + (2012) 4

T (2013) = 4 + 8048

= 8052

4 0
3 years ago
Mark earns $300 per month plus an additional 2% on all of his sales. Last month he sold $59,000. What was Mark’s income for the
Lina20 [59]

Answer:

59,000 * .02= $1,180 commission plus $300 = $1480

3 0
3 years ago
Find the two correct values of x in the equation 3x² = y when y = 75.​
valentina_108 [34]

Answer:

5 and -5

Step-by-step explanation:

3x² = 75

x² = 75/3

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x = 5 and - 5

3 0
2 years ago
Which of these observations is supported by the data in the table?Note: A rating of good or excellent means the audience liked t
hammer [34]
<span>Among those who disliked the movie, the majority were in the 26-35 age group. </span> <span>         

To explain this answer, the data showed the coherent rate of like and dislike, hence the data showed among the population ages, 26-53 years old disliked the movie as chosen as the above answer. Keeping the keenness to specificities in statistics is an important aspect in interpreting and discussing the results of a specific descriptive data. In which this case, explains and clearly showed the data on first what is the rating and second who in the group was involved in this certain event or phenomenon.</span>



3 0
3 years ago
Read 2 more answers
Simplify the expression. Write the answer using scientific notation.
bonufazy [111]

Answer:

  C.  2.5×10^-27

Step-by-step explanation:

(2×10^-13)^-2 = 2^-2 × 10^(13×(-2)) = 1/4 × 10^-26

= 0.25 × 10^-26 = 2.5 × 10^-27

___

Your scientific or graphing calculator can compute and display this for you.

4 0
3 years ago
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