622 Answered Questions for the topic Trig

04/29/18

How far apart are A and B (to the nearest yard)?
Two points A and B are on opposite sides of a building. A surveyor chooses a third point C 76 yd from B and102 yd from A,  with angle ACB measuring 55.6°.  How far apart are A and B (to the nearest... more
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04/28/18

How far apart are A and B (to the nearest yard)?
Two points A and B are on opposite sides of a building. A surveyor chooses a third point C 76 yd from B and102 yd from A,  with angle ACB measuring 55.6°.  How far apart are A and B (to the nearest... more
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04/28/18

How much does the boat weigh?
A force of 501 lb is required to pull a boat up a ramp inclined at 25° with the horizontal.  How much does theboat weigh?
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04/27/18

With what frequency does the spring oscillate?
Suppose that a weight on a spring has initial position s(0) and period P. If s(0) = -5 in. and P = 2.5 sec, find afunction s given by s(t) = a cos ωtthat models the displacement of the... more
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Trig

04/16/18

Cos(3theta/5, plus 11°) = sin(7theta/10, plus 40°) find solution
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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.
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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.
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Trig

03/04/18

A lighthouse is 33 m above sea level. The angle of depression to a small fishing boat is 24 degrees. How many meters is the fishing boat from the cliff?
A lighthouse is 33 m above sea level. The angle of depression to a small fishing boat is 24 degrees. How many meters is the fishing boat from the cliff?
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03/02/18

Solve on the interval [0, 2pi) (cosx+1)(2cos^2x-3cosx-2)=0
I'm really confused on how to solve this.
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03/02/18

How to solve cos(x)(cosx+1)=0
I missed this class so I'm really confused on how to solve this.
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Trig

02/15/18

An octagonal pool has a radius of 8 ft. How many square ft of material is needed to make a cover for the pool? (What is the area of the octagon?)
I needed help figuring out this problem. 
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02/05/18

How do you solve 2cosx sin^2x =cosx over domain 3pi < or = to x < or = to 4pi (need to give exact answers)
I've been stuck on this question ugh
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01/31/18

TRIG 1/2 ANGLE FORUMLAS
The questions are: "If sin B = -1/3 with B in QIII, find tan B/2. Also find sin B/2   The answer for tan B/2 is-3-2sqrt(2)   The answer for sin B/2 is \sqrt((3+2\sqrt(2))/(6))   These are... more
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01/31/18

Turing Trig Expression into Algebraic Expression
I have no idea how to turn this into an algebraic expression, please help ASAP! Please give me tips on how to do this with other trig to algebraic expressions, as I have four problems I am quite... more
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01/28/18

Need Help Solving cos -105 with sum or difference identity
The question is cos -105. I know how to do the process for it but for some reason my answer doesn't have the right negatives. I am getting:   √2 + (-√6) --------------         4   The actual... more
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01/26/18

Can't Solve -1-√3 * 1-√3 ------- ------ 1+√3 * 1-√3
I am doing sum and difference formulas with sin, cos, and tan. I am doing tan75 with the difference formula.   So tan 120-45   I have all the things found I just don't know how to multiply it... more
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01/25/18

Sin theta = 1/2, sec theta <0. Find cos theta and tan theta
Find cos theta and tan theta  
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01/15/18

sec2ø-2tanø=4
Solve the following equation for angles between 0 and 360 sec2Ø-2tanØ=4
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Trig

01/10/18

On a circle of radius 4 find the x and y coordinates at angle 180 degrees (or π in radian measure).
On a circle of radius 4 find the x and y coordinates at angle 180 degrees (or π in radian measure). Select one: a. (0, 4) b. (4, 0) c. (4, 4) d. (-4, 0) e. (2, 2)
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Trig

12/18/17

Trigonometry
A cottage under destruction is to be 12.6m wide. The two sides of the roof are to be supported by rafters that meet at a 50 degree angle. How long should the rafters be?
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12/03/17

I don't understand what this trig problem is asking!!!!!! Can provide more info if needed
If csc(α) = 3, where 0 < α < π/2, and β is a Quadrant II angle with tan(β) = −7, find   cos(α+β)   And there are others that I'm supposed to find, such as sin(α+β), but this is just the... more
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11/29/17

snells law. sin theta 1 over sin theta 2 equals to v1 over v 2, speed is 2.99x10^8 and angle is 87 degrees and angle of refraction is 76 degrees
i need to find v2 
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11/27/17

sin(a-b) over sin(a)-sin(b) equals cot(b)-cot(a)
establish the identity
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11/27/17

sin(A-B) over sinA-SinB equals cotB-cotA
establish an identity
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11/27/17

sin theta = 1/4 find theta+pi/6 in quadrant 2
i think the question said find exact solution? 
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