915 Answered Questions for the topic Pre-Calculus

Pre Calculus Precalculus

12/06/20

#### In radians, find all angles that have a tangent of 2.5 in the interval [0,2pi)

12/04/20

#### Find the length of the arc on a circle of radius r intercepted by a central angle 𝜃. (Round your answer to two decimal places.)

Radius r (12 feet)Central angle 𝜃 (𝜋/4 radians)Arc length s: ______ feet

12/04/20

#### Find (if possible) the complement and supplement of the angle. (Enter NONE in any unused answer blanks.)

3𝜋/4complement:supplement:

12/04/20

#### Use a calculator to evaluate the trigonometric expression. Round your answer to four decimal places. (Be sure the calculator is in the correct angle mode.)

csc(75°)________

12/04/20

#### Rewrite each angle in degree measure. (Do not use a calculator.)

(a) 7𝜋/2_____ °(b) 22𝜋/15_____ °

12/04/20

#### Evaluate (if possible) the six trigonometric functions of the real number t. (If not possible, enter IMPOSSIBLE.)

t = 3𝜋 / 2sin (t) =cos (t) = tan (t) =csc (t) = sec (t) = cot (t) =

12/04/20

#### Construct an appropriate triangle to complete the table. (0 ≤ 𝜃 ≤ 90°, 0 ≤ 𝜃 ≤ 𝜋/2)

Function: csc 𝜃 (deg): ______ 𝜃 (rad): ______Function value: √2

12/02/20

#### Continuous Exponential Growth Model

The mass of a substance, which follows a continuous exponential growth model, is being studied in a lab. A sample increases continuously at a relative rate of 16% per day. Find the mass of the...
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12/02/20

#### How to find the points of intersection between a circle and a parabola?

Use x(squared)+2y=12 and x(squared)+y(squared)=36 as an example. I've been trying to review for my finals and this is the topic that has been very challenging for me. Thank you!

11/27/20

#### Polar Coordinates

The rectangular coordinates of a point are given. Find polar coordinates (r,θ) of this point with θ expressed in radians. Let r>0 and −2π<θ<2π.(2,−2sq root of3)

11/24/20

#### Solve for the exact solutions in the interval [0,2π). Separate solutions with a comma.If the equation has no solutions, respond with DNE.

Solve for the exact solutions in the interval [0,2π). Separate solutions with a comma.If the equation has no solutions, respond with DNE.sin(5x)= - 1/2

11/24/20

#### Give the smallest two solutions of sin(3θ) = -0.0271 on [ 0, 2 π]

Give the smallest two solutions of sin(3θ) = -0.0271 on [ 0, 2 π]. Separate the two solutions with a coma.

11/24/20

#### Give the smallest two solutions of cos (2θ) = 0.8212 on [0, 2π). Separate the two solutions with a comma

Give the smallest two solutions of cos (2θ) = 0.8212 on [0, 2π). Separate the two solutions with a comma

11/22/20

#### Complete the table for a savings account in which interest is compounded continuously. (Round your answers to four decimal places.)

Initial Investment: $350Annual % Rate: ______ (%)Time to Double: ______ (yr)Amount after 13 years: $435.21

11/22/20

#### A new 2014 luxury sedan that sold for $38,880 has a book value V of $24,319 after t = 2 years.

(a) Find a linear model for the value V of the sedan.V(t) =(b) Find an exponential model for the value V of the sedan. Round the numbers in the model to four decimal places.V(t) =(c) Use a graphing...
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Pre Calculus

11/21/20

#### find cot theta and csc theta if csc theta = 5/2 and cos<0

11/20/20

#### Precalculus help

With respect to which of the following is the graph of -7x^6 + 2xy + 5=0 symmetric?

Pre Calculus

11/20/20

#### Suppose that f(x)=-3x^3-11x^2-8x+4 If (x + 2) is a factor of f(x), what is f(x) completely factored?

11/20/20

#### a cup of coffee has cooled from 92 degrees C to 60 degrees C after 12 minutes in a room at 22 degrees C C. How long will it take to cool to 40 degrees?

round to the nearest tenth as needed.

11/20/20

#### the half-life of a substance is 15 days. there's 2.5 grams of the substance initially.type an expression for the amount of substance as a function of t. when will there be less than 1 g remaining?

f(t) = __ (simplify your answer)there will be less than 1 gram remaining after about __ days. (round to the nearest tenth as needed)

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