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Kruka [31]
3 years ago
6

sin%28%20%5Calpha%20%29%20" id="TexFormula1" title=" \cos( \alpha + \frac{\pi}{2} ) = - \sin( \alpha ) " alt=" \cos( \alpha + \frac{\pi}{2} ) = - \sin( \alpha ) " align="absmiddle" class="latex-formula">
why is it equal​
Mathematics
1 answer:
alexandr1967 [171]3 years ago
5 0

\cos (\alpha +\frac{\pi}{2})= \cos(\frac{\pi}{2})\cos (\alpha)- \sin(\frac{\pi}{2})\sin(\alpha)\\=0-\sin(\alpha)\\=-\sin (\alpha)

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Evaluate
lora16 [44]

Answer:

8

Step-by-step explanation:

the top part with the variables filled in is 0 + (2x4) + (3x4x2) which is 32

the bottom part would be (3x0) + 4 which is 4

7 0
3 years ago
in an election between two candidates one got 55% of the total valid votes 20% votes were invalid if the total number of votes w
timurjin [86]

Answer:

25%- 1875 Votes

<em>7500 x 0.55 = 4125  (</em><em>first candite valid votes</em><em>)</em>

<em>7500 x 0.20 = 1500 (</em><em>invalid</em><em>)</em>

<em>first candite valid votes</em><em> </em><em>(</em><em>55</em><em>) + invalid votes (</em><em>20</em><em>) = 75% of total votes </em>

<em>first candite valid votes</em><em> </em><em>(</em><em>4125</em><em>) + invalid votes (</em><em>1500 </em><em>) = 5625 of total votes </em>

<em />

<em>100 (</em><em>total</em><em> </em><em>percent of votes</em><em>) - 75 (</em><em>total percent of votes</em><em>) = 25% Votes Left</em>

<em>7500 (</em><em>total</em><em> </em><em>number of votes</em><em>) - 5625 (</em><em>total number of votes</em><em>) = 1875 Votes Left</em>

<em>7500 x 0.25 = 1875 (</em><em>valid votes for the other candite</em><em>)</em>

<em>          </em>

4 0
3 years ago
What is the solution to this equation?
Ugo [173]

Answer:

C. x = 12

Step-by-step explanation:

5(12) + 9 = 69 - 3(12) = 33

18 + 15 = 33

6 0
3 years ago
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oksano4ka [1.4K]

Answer:

A) 0.50x +300 < 650, where x < 700

(Please mark brainliest. :3)

5 0
2 years ago
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Mr. Mendoza invests in five stocks. The table shows the growth in stock prices in dollars at the end of a trading day.
Morgarella [4.7K]

Answer:

The correct answer is C, as growth on stock E is bigger from the growth of stock B

Step-by-step explanation:

In order to resolve this problem, we must have in mind that the negative numbers are smaller when they are more distant from 0, and that positive numbers are bigger when they are more distant from 0. So, the biggest number of growth is the one that is more distant from 0.

The correct answer is C, as growth on stock E is bigger from the growth of stock B.

8 0
3 years ago
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