275 Answered Questions for the topic Trigonometric Functions

12/14/19

#### Solve cos x = -2/3 for 0 ≤ x < 2π (round to the nearest hundredth of a radian)

I received the values 131.81 and 228.209 which is incorrect. I've tried to come up with the correct answer multiple times. Solve cos x = -2/3 for 0 ≤ x < 2π (round to the nearest hundredth of a... more

12/13/19

#### Solve 5 sin A - cos A = 0, for 0 ≤ A &lt; 2π (round to the nearest hundredth of a radian).

I have tried my hardest to answer this question correctly, but it is always in correct. Thanks for the help! (Solve 5 sin A - cos A = 0, for 0 ≤ A ≤ 2π (round to the nearest hundredth of a radian).

11/10/19

#### The Top of the Billboard

The top of a billboard that is mounted on a base is 60 feet above the ground. At a point 25 feet from the foot of the base, the measure of the angle of elevation to the top of the base is one-half... more

06/25/19

#### Application of trigonometric functions to do with a graph about high and low tides

If the trigonometric equation is y=0.9cos(pi over 12.5 multiplied by x) and the depth of the water at low tide is 0.4m what is the depth after low tide? (2.d.p)

10/08/18

10/07/18

#### find all values of theta (in radian) such that tan (2/3 theta) = - sqrt3, in the interval [0, 2pi)

find all values of theta (in radian) such that tan (2/3 theta) = - sqrt3, in the interval [0, 2pi)

09/30/18

#### Prove that cos(x)tan(x) divided by cosec(x)^2 equals cos(x)^3 divided by cot(x)^3

Prove that cos(x)tan(x) / cosec(x^2) = cos(x)^3 / cot(x)^3

09/07/18

#### how high does the ladder reach on the building in feet?

A ladder of height 11 feet leans against a building so that the angle between the ground and the ladder is t∘, where 0<t<90. In terms of t, how high does the ladder reach on the building in... more

09/05/18

#### Solve: sin2x-sin4x+sin6x=0

This question is from trigonometry chapter in mathematics of class 11th. "Cbse board"

09/01/18

#### what is the domain of y=sqrt(tan(x))

y = sqrt ( tan(x) )

07/28/18

#### Limit of a cotangent function as x approaches infinity?

Is the limit well defined?Why or why not? the limit as x → ∞ of Cot ((x^2+1)/(x+3))

07/16/18

#### fiind all solutions at interval [0,2pi] sin^2x - cos^2x = 0

find all the solutions at the interval [0,2pi] for the equation sin^2 x - cos^2 x = 0

07/08/18

#### word problem

Ms. Burbage wants to put 12 strips of different colored ribbon around the edge of a clock to help her first graders separate the hours. If the radius of the clock is 10 inches, then how long is... more

06/27/18

#### The trigonometric ratio of 13pi/3 are same as that of?

pi/3, pi, pi/6 or 11pi/3??

06/07/18

#### cos^2x(tanx+1)^2 -1

I need to simplify this but I just can't find my way out of it.

06/07/18

#### Points of discountuity

how do we find pointa of discountity of trignometric functions such as tan^-1(5x)   or sec(5x)

05/02/18

#### using reference angle find the exact value

tan(sin-1(x+1⁄2))

04/27/18

#### H=10+3cos6t-sin9t-3sin3t show h can be rewritten as h= 13+4sin^3 t-6sin^2 3t-6sin3t

Please show the trigonometic identities and working

04/13/18

#### Solve the equation 8sin(1/2)x - 5 = 0 for 0 < x < 2pi. Round your answers to the nearest hundredth of a radian.

Solve the equation 8sin(1/2)x - 5 = 0 for 0 < x < 2pi. Round your answers to the nearest hundredth of a radian.

04/13/18

#### Solve the equation 8sin(1/2)x - 5 = 0 for 0 < x < 2pi. Round your answers to the nearest hundredth of a radian.

Solve the equation 8sin(1/2)x - 5 = 0 for 0 < x < 2pi. Round your answers to the nearest hundredth of a radian.

04/13/18

#### Solve 3cos 2x = 1 for 0 < x < 2pi. Round your answers to the nearest hundredth of a radian.

Solve 3cos 2x = 1 for 0 < x < 2pi. Round your answers to the nearest hundredth of a radian.

04/13/18

#### State the amplitude and period of this function: y = -3cos(pi/3)x.

State the amplitude and period of this function: y = -3cos(pi/3)x.

04/11/18

#### (cotB)(sin^2 B)(cotB)

Write in terms of sine and cosine and simplify the expression

03/08/18

#### how to get the five trigonometric function of secA =2

find the other five trigonometric function of sec A = 2

03/08/18

#### Show that the curve y=2sin2x -4x is never increasing

I am confused about how to differentiate 2sin2x or how to show that it is less than 0 and I have been trying to figure this out by various websites but it will not give me a clear answer. I would... more

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