915 Answered Questions for the topic Pre-Calculus

Pre Calculus Math Algebra 1 Algebra 2


look i am desperate. please someone ACTUALLY help me with my math homework please??

Determine whether the given sequence could be geometric, arithmetic, or neither. If possible, identify either the common ratio or the common difference.4, 2, 1, 1/2, ....  A.) geometric; r = 2B.)... more


Suppose sin(theta)= m where 0° Is Less than or equal to theta and less than or equal to 90°. Write an expression for each of the following in terms of “m”

 a) sin(theta) = ?                           b) cos(theta) = ?    
Pre Calculus


Trigonometry question

Prove the identity. Cot(2x)=1-tan^2(x)/2tan(x)
Pre Calculus


Use Identities to find the value of each expression.

Find Cos theta and sec theta if tan theta equals -2 and sin theta is greater than zero.
Pre Calculus


Cos A =4/5(A in quadrant 4) and Sin B=2/3 (B in quadrant 2)

Using the equation above I need to find Sin B-A and cos B/2
Pre Calculus Math Precalculus Statistics


Recall the equation for a circle with center ( h , k ) and radius r

Recall the equation for a circle with center (h,k) and radius r. At what point in the first quadrant does the line with equation y=2x+2 intersect the circle with radius 3 and center (0, 2)?x = y = 
Pre Calculus Math Precalculus


Convert the rectangular equation x^2 +(y+2)^2 =4 to a polar equation

Please help me with a step by step so I can find my mistake thank you
Pre Calculus Precalculus Pre Calculus


Can someone please answer this for me, I have been trying to work it out but I get an incorrect answer. Thank you

An object is objected to two forces: f1=112 lbs at 231degrees from the north clockwise and f2=108 lbs at N 16degrees W .. I have to find the components of F1 and write in standard form, using i and... more
Pre Calculus Trigonometry


What is the altitude of the plane?

A plane approaches an airport runway. The runway is 9000ft long. The pilot sights the start of the runaway at an 18.8° angle of depression, and the end of the runway at a 17.5° angle of depression.... more
Pre Calculus Math Precalculus Algebra


Find all solutions in [0,2𝜋) cos 4𝑥 = − √2/2

Pre Calculus Math Precalculus Algebra


Verify: (sin 𝑥/cosx+1) + (cos 𝑥−1/sinx) = 0

Pre Calculus Math Algebra 1 Precalculus


Write an equivalent expression for 6 sin^4 𝑥 that does not contain powers of trigonometric functions greater than 1

the x is not raised to the power of 6
Pre Calculus Math Precalculus


Solve this problem please

Given that sin u = −2/5 , u in quadrant III, and cos v = 3/4 , v in quadrant IV, find the exact value of sin(u + v).
Pre Calculus Calculus


Write equations of cosine functions using properties

Find an equation for a sinusoidal function that has period 2​𝜋, amplitude 1, and contains the point (𝜋,4)Cos2pi/2pi=1Cos(x)4 = Cos(pi+C)+D4= Cos (pi+0) +D4= Cos (pi)+D4= (-1) +D My... more
Pre Calculus Trigonometry


This is a circular trig problem that I need help on (pre calculus).

The latitude of London, England is 51.5 N. How far is London from the North Pole if the radius of the earth is approximately 39363 miles?
Pre Calculus Calculus


A particle is moving with the given data. Find the position of the particle, s(t).

A particle is moving with the given data. Find the position of the particle, s(t).(i) a(t) = 2t + 7 , s(0) = 3 , v(0) = -3 s(t) = ??(ii) t^2 - 5t + 4 , s(0) = 0 , s(1) = 20 s(t) = ??
Pre Calculus Trigonometry


Graphing cosine functions

How would I add increments of p/4 to an x-axis when phase shifting a cosine graph.Say my x-axis looks like:0 | | p/2 | | p | | 3p/2 | | 2pHow do I... more
Pre Calculus Calculus Precalculus


Which of the following is the general solution of the differential equation dy dx equals the quotient of 8 times x and y

options - a) y2 = x2 + Cb)x2 - y2 = Cc)y2 = 4x2 + Cd)y2 = 8x2 + CI think its D


How do I solve this?

The problem is: "Use the Law of Sines to solve the triangle. Round your answers to two decimal places. A = 80° 20',  C = 53.7°,  c = 17.9"I understand the whole Law of Sines thing and how to use... more

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