15,254 Answered Questions for the topic precalculus

Precalculus

07/01/23

True or False? The statement tan(tan-1(x)) = x, for all real numbers in the interval −(𝜋)/2 < x < 𝜋/2 .
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Precalculus

07/01/23

True or False? the statement sin (sin-1 x) = x for all real numbers in the interval −(𝜋)/2 < x < 𝜋/2 .
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Precalculus

07/01/23

Find cos (x - t) given that the cos (x) = −(4)/5 , with x in quadrant 2, and cos (t) = 12/13 , with t in quadrant 4.
a.33/65b.-33/65c.-63/65d.63/65
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Precalculus

07/01/23

Perform the indicated operations and simplify the result so there are no quotients: sin(𝑥)/cos(𝑥) + cos(𝑥)/sin(𝑥)
a.sin(x)tan(x)b.sec(x)csc(x)c.-2tan(x)d.1 + cot(x)
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Precalculus

07/01/23

If cos (2x) = 45 and x terminates in quadrant 1, then find the sin (x).
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Precalculus

07/01/23

Solve the following equation in the interval [0 , 2π).
sin2(x) = 3 - 2sin(x)a.x = π/3b.x = πc.x = 2πd.x = π/2
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Precalculus

07/01/23

Solve the following equation in the interval [0° , 360°). cos2(x)sin(x) = sin(x)
a.x = 300 , 600b.x = 00 , 1800c.x = 00d.x = 1800
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Precalculus

07/01/23

Use the definition of continuity to determine whether f is continuous at a = 5.
f(x) = 8x + 1Is f continuous at 5?
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Precalculus

07/01/23

For the function given by f(x)=x^2+3x-28 and a=4
find lim h→0 f(a+h)-f(a) / h
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Precalculus Math Algebra 2 Sat Math

06/30/23

SAT HELP.. can someone explain how to do this and what the answer is
To calculate the volume of a chemical produced in a day a chemical manufacturing company uses the following formula below:V(x)=[C1(x)+C2(x)](H(x))where x represents the number of units produced.... more
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Precalculus Math Algebra 2 Sat Math

06/30/23

Need explanation on one part
Use the following expression to answer the questions below:(1/x+3 + 6/x^2+4x+3)*x+3/x+1a. Simplify the expression down to one rational expression.b. Explain the steps you used to do the... more
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Precalculus Math Algebra 1 Algebra 2

06/26/23

Expand the function f(x) = 1/(3-x) in a Taylor series around a=2 and determine the interval of convergence.
Hi can u help me solve this question step by step. I dont reaaly understand and it would be perfect to have a visual reference. Thanks
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Precalculus Math Algebra 2 Sat Math

06/26/23

SAT HELP. I'm not sure if I did this right so can someone explain in detail and give the answer so I can cross check.
A manufacturing company wants to keep their revenue positive. The equation for C(x) represents their cost, where (x) represents the time in months. The equation for P(x) represents their profit.... more
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Precalculus

06/24/23

The point P lies on the terminal side of the angle. Find the value of the trigonometric function: 𝑃(−(5),5) ,𝑐𝑜𝑡(Θ)
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Precalculus

06/24/23

Precalc Polynomials
Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x), and express P in the form P(x) = D(x) · Q(x) + R(x).P(x) = x4 + 3x3 − 15x,    D(x) = x − 4P(x)=
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Precalculus

06/24/23

Precalculus Find Distance Using this Info

To find the distance across a small lake, a surveyor has taken the measurements shown. Find the distance across the lake using this information. (Assume points A and B are exactly along the... more
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Precalculus

06/24/23

Precalc Trigonometric Function

Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number.Sin (4𝜋/7) Cos(5𝜋/21) -Cos(4𝜋/7) Sin(5𝜋/21)A.  Write Expression as a trigonometric function... more
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Precalculus

06/23/23

Find the amplitude of 𝑦=3⋅sin(4⋅𝑥+𝜋). Select one: a.) 4 b.) 12 c.) 3 d.) none
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Precalculus

06/23/23

Find the period of the function y = -5 cos (x). A) 5 B) 𝜋5 C) 2⋅𝜋 D) 𝜋
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Precalculus

06/23/23

Find the period of the function y = -5 cos (x). A) 5 B) 𝜋5 C) 2⋅𝜋 D) 𝜋
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Precalculus

06/23/23

True or False? Determine if the pair of angles are co-terminal: 315o ; 7⋅𝜋/ 4
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Precalculus

06/23/23

𝑡= √ 2⋅𝑏 / g⋅sin(Θ)⋅cos(Θ) where b(length of base in feet) and g = 32.2 feet per second (acceleration of gravity). How long does is take to slide down with a base of 12 feet at an angle of 440?
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Precalculus

06/23/23

True or False? -60o is the radian measurement 𝜋6 .
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Precalculus

06/23/23

Evaluate the 𝑎𝑟𝑐𝑡𝑎𝑛(−⋅ √3). A) -30o B) -60o C) 30o D) 60o
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Precalculus

06/23/23

The point P lies on the terminal side of the angle. Find the value of the trigonometric function: 𝑃(−(5),5) ,𝑐𝑜𝑡(Θ)
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