9,261 Answered Questions for the topic trigonometry

Trigonometry Math

03/23/22

If a is in the third quadrant and sin a = -1/4, find the exact value of sin (a + π /3).
If a is in the third quadrant and sin a = -1/4, find the exact value of sin (a + π /3).
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Trigonometry

03/22/22

Given sec α = 40/ 12 and 2π < α < 4π/ 2 , find sin( α/ 2 ). Simplifying is not necessary. Use a half-angle formula.
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Trigonometry Math Precalculus

03/21/22

How many t does inverse sine equal inverse cosine?
How many t does sin–1 t = cos–1 t?1.) 02.) 13.) 24.) 35.) Infinitely many
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Trigonometry Math Precalculus

03/21/22

Which of the statements are true?
If cos(θ) = 1/2, then which of the following statements must be true? Choose all that apply.1.) cos(-θ)=1/22.) sin(pi/2 -θ)= 1/23.) sec(θ) = 24.) tan^2(θ) =3
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Trigonometry Math Precalculus

03/21/22

What is the period of time in this trigonometric equation?
P= 200sin (2pi/3t) + 3800The population is oscillating, and its initial value is 3800. The change is happening at an oscillating rate between a high and a low over a _____ year period.
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Trigonometry Math

03/21/22

Trig Identity clarification
The question is: sin theta = cos (theta + 10)For my answers I got theta = 90o - (theta + 10o) + 360on : [180o(9n +2)]/9 theta = 180o - (90o - (theta + 10o)) = 360on For the second I found it's true... more
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Trigonometry Calculus Precalculus

03/21/22

Find all complex cube roots of 3−i. Give your answers in a+bi form, separated by commas.
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Trigonometry Precalculus

03/21/22

Solve triangle ABC (B= 95°) (C=35°) (b=100 in)

Round answers to the nearest tenth.
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Trigonometry Math Precalculus

03/20/22

Find the amplitude and midline of an equation
Find the amplitude and midline of y= 2-9cost
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Trigonometry Math Precalculus

03/20/22

Find the slope of a line

Find the slope of the line passing through the origin, which is perpendicular to a second line, l, passing through the origin at an angle of 5pi/9. Round to 3 decimal places
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Trigonometry Math Precalculus

03/20/22

Find a solution for sinθ = 6/7
Find a solution for sinθ = 6/7 with θ in radians and -pi/2 < θ <pi/2. Round to three decimal places. θ = ?
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Trigonometry Math Precalculus

03/20/22

Find the sinusoidal function of V(t)
Household electrical power in the US is provided in the form of alternating current. Typically, the voltage cycles smoothly between +155.6 volts and -155.6 volts 60 times per second. Use a... more
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Trigonometry Math Precalculus

03/20/22

Find Missing Coordinate (Unit Circle)
A line passing through the origin and the point P= (a, -4) forms the angle(t) = 2pi/3 with the x-axis. Find the missing coordinate of P. Round your answer to three decimal places.
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Trigonometry Precalculus

03/19/22

Hyperbola Application Problem
The sides of a nuclear power plant cooling tower form a hyperbola. The diameter of the bottom of the tower is 270 feet. The smallest diameter of the tower is 148 which is 416 feet above the ground.... more
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Trigonometry

03/19/22

What is his angular​ speed, in revolutions per​ hour?
A rider in a road bike race had an average linear speed of ​39.975 km/hr. The wheel of his bicycle had a diameter of 66cm. What is his angular​ speed, in revolutions per​ hour?
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Trigonometry

03/17/22

A Ferris wheel is 25 meters in diameter and boarded from a platform that is 1 meters above the ground.

A Ferris wheel is 25 meters in diameter and boarded from a platform that is 1 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel... more
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Trigonometry Math

03/17/22

Please help due tonight
sec(θ)=−3 , where θ is in Quadrant II.Use the given information about θ to find the exact value of tan(θ/2).
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Trigonometry Math

03/17/22

Find the exact value of each expression
sin(3pi/4)sin(pi/12) -5(sin(11pi/12)-sin(7pi/12))
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Trigonometry

03/17/22

Suppose you know the temperature varies between 43 and 77 degrees during the day and the average daily temperature first occurs at 8 AM
Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature varies between 43 and 77 degrees during the day and the average daily temperature first... more
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Trigonometry

03/14/22

A plane is flying wt an altitide of 7000feet, directly over metro city. If the plane descend steadily, making an angle of 79° with vertical line, how far will it have to fly fly to reach the airport?
I think we have to use toacahsoh??
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Trigonometry

03/13/22

What is the expression?
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Trigonometry

03/13/22

What is the expression?
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Trigonometry

03/13/22

What is the expression?
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Trigonometry

03/13/22

What are the values of sine and cosine?
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Trigonometry

03/13/22

What are the values of sine and cosine?
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