MATHEMATICS HIGH SCHOOL

Which expression is equivalent to (tangent (StartFraction theta Over 2 EndFraction) ) (negative sine theta)?– 1 – cos(ϴ)
– 1 + cos(ϴ)
1 + cos(ϴ)
1 – cos(ϴ)

Answers

Answer 1
Answer:

The given expression is equivalent to (-1 + cosθ). Option B is correct.

What is trigonometry?

The field of mathematics is concerned with the relationships between triangles' sides and angles, as well as the related functions of any angle.

The given data in the problem is;

\rightarrow \rm (tan((\theta)/(2) )(-5sin\theta)\n\n \rightarrow (sin (\theta)/(2) )/(cos (\theta)/(2)) * - (2 sin n (\theta)/(2) * {cos (\theta)/(2))

\rightarrow - (2 sin ^2 (\theta)/(2))\n\n -1+cos \theta

The given expression is equivalent to (-1 + cosθ).

Hence,option B is correct.

To learn more about the trigonometry, refer to the link;

brainly.com/question/26719838

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Answers

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Hope this helps !

If a laptop that is regularly priced
at $1240 is 2  off, how much does it cost?
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Answers

2/5 off basically means that it is 40% off 

1240 * 40% = 496

1240 - 496 =

744
2/5 is 40 0/0 off take 2÷5 = .4 then 1.00-.4= .6  1240×.6=744

What is the answer to this 17x-9(x+4)=3x-26

Answers

17x - 9(x + 4) = 3x - 26

First, expand to remove parentheses.
17x - 9x - 36 = 3x - 26
Second, subtract 17x - 9x to get 8x.
8x - 36 = 3x - 26
Third, add 36 to both sides. 
8x = 3x - 26 + 36
Fourth, simplify.
8x = 3x + 10
Fifth, subtract 3x from both sides.
8x - 3x = 10
Sixth, subtract 8x - 3x.
5x = 10
Seventh, divide both sides by 5.
x = (10)/(5)
Eighth, since 2 goes into 5 to get 10, simplify the fraction to 2.
x = 2

Answer: x = 2

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Answers

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Given the information below, QRS is UVT similar to ? If so, give the scale factor.QR= 8 RS = 16 UV = 18 VT= 34 M<S=36 M<T=36

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B.Yes, the scale factor is 1:2.
C.Yes, the scale factor is 4:9.
D.Yes, the scale factor is 8:17.

Answers

Look\ at\ the\ picture.\n\n\Delta QRS\sim\Delta UVT\ if\ (|QR|)/(|UV|)=(|RS|)/(|VT|)\n\n(|QR|)/(|UV|)=(8)/(18)=(4)/(9)\n\n(|RS|)/(|VT|)=(16)/(34)=(8)/(17)\n\nAnswer:A.\ No,\ the\ triangles\ are\ not\ similar.

Daniel collected 120 sports cards. Fifty-five of the cards are baseball cards . About what percent of the cards are baseball cards? Round to the nearest percent

Answers

To find the percentage (or probability) of something, we have to take the selected amount over the total number.  

Therefore, our fraction or percentage is 55/120, which when divided equals 0.4583.

Rounded to the nearest percentage, this would be approximately 46%.
To find the percentage, divide 55/120, then move the decimal 2 places to the right
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