30 Answered Questions for the topic Law of Sines

Law Of Sines Precalculus

10/16/21

Solve triangle ABC. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ∠A1 is smaller than ∠A2.) b = 124, c = 162, ∠B = 44°
<A1? <A2?<C1? <C2? a1? <a2?
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05/28/21

Trigonometry Law of Cosines Ship Bearings PLS HELP ASAP
"A boat race runs along a triangular course marked by buoys A, B, and C. The race starts with the boats headed west for 3700 meters. The other two sides of the course lie to the north of the first... more
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Law Of Sines Math Math Trigonometry

05/18/20

law of sines and law of cosines
In triangle ABC m<A=20o , m< C = 130o , a= 10in. Find the length of C.
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04/06/20

Jack wants to build a tree house.
His parents worry that he is building it too high. If Jack’s dad is looking at the tree house location from a 39° angle and then moves back 10 feet so he can see it at a 31° anglehow high is the... more
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01/26/20

How can you tell how many solutions there are for a triangle given two sides and a non included angle?
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Law Of Sines Math Calculus Precalculus

05/10/18

Word Problem Law of Sines/Cosines and Heron's formula
Yosemite Falls in Cali is composed of 3 sections. The upper Yosemite Fall, The middle Cascade, and Lower Yosemite Fall. From a footbridge across the creek 2500 feet from the falls, the angles of... more
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Law Of Sines

04/04/18

In ΔGHI, h = 94 inches, ∠H=84° and ∠I=84°. Find the length of i, to the nearest 10th of an inch.
I need help figuring out this problem. My teacher tried explaining but i just got more confused.
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Law Of Sines Trigonometry Tangent Cosine

03/02/18

See Description
One end of a wire is attached to the top of the tower and the other end to a stake in the ground that is 44’ from the base of the tower. The wire makes a 64 degree angle with the flat ground. If... more
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Law Of Sines Law Of Cosines

02/13/18

explain when one should use the law of cosine instead of the law of sine
explain when one should use the law of cosine instead of the law of sine
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05/15/17

Find the area of the triangle using law of sines
Base = 29cm, height = 8 cm, angle between the two = 100 degrees. 
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03/12/17

Setting up the trig equation. Using sine or cosine.
Tami and Dustin are on opposite sides of the washington monument, which is 555 feet. Tami's angle of elevation to the top of the monument is 38 degrees. Dustin's angle of elevation is 64 degrees.... more
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03/12/17

setting up a trig equation and solving it. either using law of cosines or law of sines.
An air traffic controller is tracking a plane 3.4 miles due north of the radar tower. A second plane is located 2.1 miles from the tower at a heading of 72 degrees north of west. To the nearest... more
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Law Of Sines

12/04/16

Law of Cosines 5.2
For the triangle ABC, which of these is not a Law of Cosines?   (a) a2=b2+c2-2bc cos A   (b) b2=c2+a2- 2ac cos B   (c) c2=a2+b2-2ab cos C   (d) a2=b2+c2-2ab cos A   Please show step by... more
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Law Of Sines

12/03/16

Law of Sines
Given the triangle ABC with angles A= 58°, B=70°, and side c=21cm. Using the Law of Sines, find the length of the side a. Approximate your answer to the nearest whole number.   Show all step by... more
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07/05/16

Need help ASAP with law of sines and finding side b of triangle using law of sines please help
Find the value of side b for each triangle using The Law of Sines:  1)A=24.3 degrees C=54.6 degrees a=2.68 2)B=10 degrees C=135 degrees c=45 3)A=10 degrees B=60 degrees a=7.5  
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07/05/16

pre calc BEARING problems, multiple questions, please answer ASAP, I am very confused
1)The bearing from A to B is 40°. Determine the bearing of A from B.  2) If the beating from A to B is 120 degrees. Determine the bearing of A from B. 3) Describe in words what the bearing "N20... more
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Law Of Sines Law Of Cosines

06/02/16

0 0 A man wants to build a triangular lot. What would Angle A, B, and C? (Side lengths in description)
P.s sorry can't draw the triangle it would have made it easier.AB is 211.BC is 142. AC is 185. Thanks :)
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Law Of Sines Law Of Cosines

06/01/16

A man wants to build a triangular lot. What would Angle A, B, and C? (Side lengths in description)
P.s sorry can't draw the triangle it would have made it easier. AB is 211. BC is 142.  AC is 185.  Thanks :)
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Law Of Sines Law Of Cosines

05/31/16

Angle A is 43, Angle B= 70 b=85 what is a?
find the indicated side to the nearest tenth.  Thanks :)
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Law Of Sines Radians Cosine Sine

05/28/16

Solve for 2cos-sin^2x=cos^2x over the interval [0,2pi)
Solve for 2cosx - sin2x= cos2x over the interval [0,2pi)   1.) x=pi/6 and 11pi/6 2.) x=5pi/6 and 7pi/6 3.) x=2pi/3 and 4pi/3 4.) x=pi/3 and 5pi/3
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Law Of Sines Trigonometry Angles

05/01/16

A 50-meter vertical tower is braced with a cable secured at the top of the tower, 30 meters away from the base. What angle doe the cable make with the tower?
law of sines
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Law Of Sines Math Precalculus

04/02/16

How do I know if my SSA triangle has more than one set of answers?
Solve the triangle using the law of sines: a = 75 b = 100 c = ?   <A = 30° <B = ? <C =?   My work: Sin B / 100 = sin 30 / 75 Sin B = (100 * sin(30°))/75 Sin B = .6667 Sin-1... more
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Law Of Sines Calculus Triangles

03/26/16

Solve the triangle using the Law of Sines: Did I do this correctly?
Given: <B = 29 degrees. <C = 51 degrees. b = 44   51 + 29 = 80 degrees. <A = 100 degrees.   Sin51° / c = sin29°/44   c = 44sin51° / sin29°   c = 70.5   then    sin100° / a =... more
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Law Of Sines Obstuse Triangles

02/28/16

Where is the 6.5°
I need to know where this angle would go I'm order to solve for the rest of the triangle.     A 12.0m tall power pole is leaning 6.5° off of the vertical because of soil erosion. A wire attached... more
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Law Of Sines Math Trigonometry Trig

12/20/15

In ?PQR, q = 45 cm, ?Q=117° and ?R=18°. Find the length of p, to the nearest 10th of a centimeter.
In ΔPQR, q = 45 cm, ∠Q=117° and ∠R=18°. Find the length of p, to the nearest 10th of a centimeter.
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