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lorasvet [3.4K]
3 years ago
10

Verify the identity sin^2(x/2)=(1-cosx)/2

Mathematics
1 answer:
horsena [70]3 years ago
5 0
Use the following identity:

cos(2x)=1-2sin^2(x)
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5q - p + p + 1, please help!
Mamont248 [21]
So basically you just add the like terms to simplify the equation. You have 5q-p+p+1 you can cancel out the both p’s because one is negative and one is positive. That leaves you with 5q + 1 they are not like terms so you cannot simplify them so your simplified equation is 5q +1
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On a factory floor, 30 out of every 140 toy robots is defective. What percent of you robots are defective? Round to the nearest
Gekata [30.6K]
30 out of 140
that means the equation is 30/140
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that moves over the 21%
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If backpack is discounted 10% ib sale for $37.80 what is the original price
taurus [48]

the answer is $34. 36 if I understood your question correctly.
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3 years ago
7 1/6 times 3/4 is??
Paladinen [302]

Answer:

7\frac{1}{8}

Step-by-step explanation:

Multiply across.

(7\frac{1}{6})(\frac{3}{4})=7\frac{3}{24}

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8 0
3 years ago
M is the centroid (center of gravity) of △ABC, line k goes thru M and intersects AB and AC . The distances of the vertices B and
lana [24]

Answer:

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The midpoint of BC will be a distance from line k that is the average of the distances of B and C: (17+13)/2 = 15. Call that midpoint P. We know distance MP is half of distance MA. This same relationship will hold with respect to the distances from P and A to any line through M. That is, the distance from line k (through M) is twice the distance from P to line k: 30 units.

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