278 Answered Questions for the topic Trigonometric Functions

01/13/17

#### Find the exact value of the trig function below.

cos(x+y) if sinx=12/13, cosx=5/13, siny=8/17, and cosy=15/17

Trigonometric Functions

12/16/16

#### What does tan(90degrees-x) equal to

I do not understand what tan(90degrees-x) is equal too. I understand how cos(90degrees-x is equal too sin x but I do know know what tan(90degrees-x) is equal to

Trigonometric Functions Bearings

12/13/16

#### Which formula am I supposed to use to find the distance from each station to the fire?

Two fire lookout stations are 10 miles apart, with station B directly east of station A. Both stations spot a fire. The bearing of the fire from station A is N25°E and the bearing of the fire from...
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12/03/16

#### Simple Trig, got lost and need help.

Solve the given equation over the interval [0,2): 2sinx+ (sqrt 3) sin^2x=-(sqrt 3) cos^2x
A. x=0, and x=(pi/2), and x=(3 pi/2), and x=2(pi)x=(3 pi/2), and x=(7 pi/2)
b. x=(4 pi/3) and x=(5...
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11/30/16

#### Need Urgent Trig Help!!

Find the value for sin (θ) if the following conditions hold: cos(2(theta)) = 3/5 and 90(degrees) < (theta) < 180(degrees)
A. (1/25) B. (sqrt5/25) C. (2 sqrt5/5) D. (sqrt5/5)

Trigonometric Functions

11/28/16

#### Rewrite Expression 14.

Rewrite the expression in terms of sines and cosines only and then simplify the resulting expression.
cot x + tan x + csc x sec x

Trigonometric Functions

11/28/16

#### Trigonometric Function 13.

Find the solutions of the equation: sin(2x)=1/2 in the interval [0,2pi).
Show details in answer please.

Trigonometric Functions

11/26/16

#### Algebraic Expression

Write an algebraic expression for y=tan (cos^-1 x/3) for 0<x<3.

Trigonometric Functions

11/26/16

#### Simplifying Trig Functions Using Substitution

Simplify y=x/sqrt of (7-x^2) using substitution x= sqrt of 7 cos theta for 0<theta<pie/2. Please Help!!

Trigonometric Functions

11/26/16

#### Algebraic Expressions

write an algebraic expression for y-tan (cos^-1 x/3) for 0<x<3.

Trigonometric Functions

11/05/16

#### Simplifying the following expression to a single trigonometric function

Could someone help walk me through how to simply this expression to a single trigonometric function?
(1+(sin2x/cos2x))/sec x

10/26/16

#### Trig question

My math is online and the helper says that sin∅= y/r= (5√74)/74 = 144.5° . how do u convert that fraction into degrees.
I did try the inverse of ∅=sin-1(y/r) , but for my example that only comes...
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Trigonometric Functions

10/09/16

#### If sin of theta is about -0.7660, which of the following represents an approximate value of tan of theta for 180°<theta < 270°

O.7660
0.8392
1.1916
1.4198

09/25/16

#### Find all values of theta in the interval [0°,360°) that have the given function value.

tan theta = √3/3

Trigonometric Functions

09/18/16

#### trigonometric expressions simplifying

cos(x) / 1+ sin(x) + 1+sin(x) / cos(x)
How do I express this as a number divided by a trigonometric function?
WHat i attempted was to combine the fractions and I...
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Trigonometric Functions

09/15/16

#### The displacement of a harp string

The displacement, x, in millimeters, of a harp string, t, seconds after it is initially plucked is modeled by the function, x(t)=12sin(20πt)
a) what are the amplitude and period of this...
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Trigonometric Functions

08/14/16

#### trigonometry question

Express u^10cos(x)+1w3sin(x) in the form Ccos(x−?).
C=
?=

#### Math Help? *MULTIPLE CHOICE*

A value added to a variation that is proportional, is known as a/an _______. A. extra B. addend C. constant D. subtend

08/04/16

#### Math Help? *MULTIPLE CHOICE*

In the equation y = kx, k represents the ____________________. A. constant of change B. variability quotient C. scalar D. constant of variation

07/25/16

#### Sinusoidal function

Two Ferris wheels are rotating side by side at the Math Fair. The first Ferris wheel has a radius of 7m and makes one complete revolution every 16s. The bottom of the wheel is 1.5m above the...
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07/20/16

#### Sinusoidal function

The propeller of a boat at dock in the ocean will rise and fall with the waves. On a particularly wavy night, the propeller leaves its resting position and reaches a height of 2m on the peaks of...
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06/27/16

#### function and trig

The function g: x ----> a + bsinx where
a=4 and b=2
is defined for the domain pi/2 ≤ x ≤ k.
Find the largest value of k for which g(x) has an inverse.

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