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Furkat [3]
3 years ago
9

50 Points

Mathematics
1 answer:
Ainat [17]3 years ago
4 0

Answer:

Uhmm

B?

Step-by-step explanation:

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Sqrt(1-costheta)(1+costheta)
aalyn [17]

Answer:

sinθ

Step-by-step explanation:

\sqrt{1-cos^{2}x }

\sqrt{sin^{2}x }

sinx

(replace x with theta)

5 0
3 years ago
Solve for the inverse g(x) = 2x^2-6/9​
oksian1 [2.3K]

Answer:f(x)=x2−6x−9 f ( x ) = x 2 - 6 x - 9. Replace f(x) f ( x ) with y y . y=x2−6x−9 y = x 2 - 6 x - 9. Interchange the variables. x=y2−6y−9 x = y 2 - 6 y - 9.

Step-by-step explanation:

4 0
3 years ago
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spin [16.1K]

Answer:

-146

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
2tan(45-A)/1+tan^2(45-A)=cos2a
AVprozaik [17]

Answer:

Let θ = (45 - A)°.

=> 2Tanθ/ 1 + Tan²θ

=> 2Sinθ/Cosθ / 1 + Sin²θ / Cos²θ

=> 2Sinθ/Cosθ/ Cos²θ + Cos²θ / Cos²θ

=> 2Sinθ/Cosθ/ 1 / Cos²θ

=> 2SinθCos²θ/Cosθ

=> 2SinθCosθ  

=> Sin2θ

But we assumed θ = (45 - A)°,

=> Sin2(45 - A)

=> Sin(90  - 2A)  (∵ Sin(90 - θ) = Cosθ)

=> Cos2A

= R.H.S

Hence proved.

Step-by-step explanation:

3 0
3 years ago
Find the area of oC. Round your answer to the nearest hundredth,
IrinaK [193]

Answer:

Area ≈ 314.16 square inches

Step-by-step explanation:

Radius of circle (r) = ½(20) = 10 in.

Formula for area of circle, A = πr²

Plug in the value into the formula

Area = π × 10²

Area = π × 100

Area = 314.159265

Area = 314.16 in.² (nearest hundredth)

8 0
3 years ago
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