915 Answered Questions for the topic Pre-Calculus

Pre Calculus Trigonometry

04/14/21

#### Graphing a cosine function

I have been practicing graphing cosine functions on IXL pre-Calculus N.10-4cos (x+pi/3)+1I am able to under the sinusoidal axis being 1, and also to find the amplitude easily as well.My trouble... more
Pre Calculus Precalculus Pre Calculus

04/12/21

#### Cartesian to Polar Coordinate 4

Convert the Cartesian coordinate (-5, -6) to polar coordinates, 0≤θ<2π.r =   θ =
Pre Calculus Precalculus Pre Calculus

04/12/21

#### Cartesian to Polar Coordinates 5

Convert the Cartesian coordinate (5, 1) to polar coordinates, 0≤θ<2πr =  θ =
Pre Calculus Precalculus Pre Calculus

04/12/21

#### Cartesian to Polar Coordinates

Convert the Cartesian coordinate (3, -2) to polar coordinates, 0≤θ<2π r =   θ =

04/12/21

#### Polar Equation with Curve

A curve with polar equation r=225sinθ+11cosθ ﻿represents a line. This line has a Cartesian equation of the form y=mx+b ,where m and b are constants. Give the formula for y in terms of x. For... more
Pre Calculus

04/09/21

#### Find the focus of the parabola.

The vertex of a parabola is (10,−9). The directrix is the line y=−10. Find the focus of the parabola.
Pre Calculus Math Pre Calculus

04/08/21

#### Pre-calc question

Verify: sin^3 𝑥−cos^3𝑥/sinx-cosx = 1 + sin 𝑥 cos 𝑥what do i do with the third powers?
Pre Calculus Math Algebra 2 Calculus

04/06/21

#### Help!!! Just Need the Need Help with Graphing!

A pipe needs to run from a water main, tangent to a circular fish pond. On a coordinate plane, construct the circular fish pond at a given location and specify your center point and radius. Write... more
Pre Calculus Precalculus Pre Calculus

03/26/21

#### Trigonometric Identities and Equations

Hello, I've been trying to solve this problem but cannot seem to understand it. The problem is as follows:What are all the values of theta to the nearest degree in the interval 0 degrees is less... more
Pre Calculus Precalculus Pre Calculus

03/25/21

#### Find tan B and csc B if sec B = 3/2 and tan B<0

Use the Pythagorean identities to find each function value.
Pre Calculus Precalculus Pre Calculus

03/25/21

#### find tan B and CSC B if sec B = 3/2 and tan B < 0

Use the Pythagorean identities to find each function value.
Pre Calculus Precalculus Pre Calculus

03/25/21

#### find cos y and tan y if csc y = -√6/2 and cot y>0

Use the Pythagorean identities to find each function value.
Pre Calculus Precalculus Pre Calculus

03/25/21

#### find cos y and tan y if csc y = -√6/2 and cot y > 0

Use the Pythagorean identities to find each function value.
Pre Calculus Precalculus Pre Calculus

03/25/21

#### find sinØ and tanØ if cosØ = -3/4 and sinØ > 0

Use the Pythagorean identities to find each function value.
Pre Calculus Precalculus Pre Calculus

03/25/21

#### Find sinØ and tanØ if cosØ =-3/4 and sin Ø > 0

Use the Pythagorean identities to find each function value.
Pre Calculus

03/22/21

#### what is the answer

For positive acute angles A and B, it is known that cos⁡A=60/61 and tan⁡B=12/35.  Find the value of cos⁡(A−B) in simplest form.

03/19/21

#### Find dy/dx for the indicated function y. y=8^x+e^3

Find dy/dx for the indicated function y. y=8^x+e^3dy/dx= ___________ ​(Type an exact​ answer.)
Pre Calculus Math Algebra 1 Algebra 2

03/17/21

#### HELP PLEASE, can you show steps to, WILL SEND \$!!!!

A coffee company purchases groups of coffee beans and then divides each group of coffee beans into premium beans, regular beans, and unusable beans. The company needs at least 280 tons of premium... more

03/17/21

#### Increasing, Decreasing, and Concavity

The f(x) = x^3 - 6x^2 + 12x + 6 has the following intervals: (-oo,5)U(7,oo)Can someone tell me what interval is this function decreasing, what interval is the concave downward and upward, and what... more
Pre Calculus Precalculus Pre Calculus

03/17/21

#### Verify the following identity

1)sin2x+sin4x/cos2x+cos4x=tan3xboth sins are over the cos please show work seeing the problems worked out helps me understand where I went wrong when I first worked it out and I learn better by... more
Pre Calculus Calculus

03/12/21

#### Find the first five terms of the recursively defined sequence

a1 = 5, an = (-1)(n-1)a(n-1) for all n ≥ 2
Pre Calculus Precalculus Pre Calculus

03/10/21

2sin^2x=sinx+3

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