April 1, 2015

Homework Help: Math (trigonometry)

Posted by Sammy on Sunday, December 2, 2012 at 9:30pm.

How do you get the second triangle when you have an ambiguous case of sine law? For example, if you are given the following information for a triangle:

a = 7.2 mm, b = 9.3 mm, <A = 35

I can solve for one triangle:

Find <B, <C, side c.

sinB/9.3 = sin35/72
sinB = 9.3sin35/7.2
B = sin^-1 (9.3sin35/7.2)
B = 48

180-35-48 = 97

Side c:
c/sin97 = 7.2/sin35
c = 7.2/sin97/sin35
c = 12.5

How do you find and solve for the second one?

Answer this Question

First Name:
School Subject:

Related Questions

AMBIGUOUS CASE OF SINE LAW - Triangle DEF where triangle E = 144 degrees, e = 10...
trigonometry - Use logarithms and the law of tangents to solve the triangle ABC...
Trigonometry - Solve for the ambiguous triangle. 1. Given: A=45; a=3; b=5 2. A=...
TRIGONOMETRY ASAP PLEASE :3 - Solve for the ambiguous triangle. 1. Given: A=45...
Algebra 2 - Using the information given about a triangle, which law must you use...
Summer School Calculus - Add the following vectors , 7m/s [N30E] and 2m/s [S17E...
Pre Calc Trig Bit - Determine whether the given information resutls in one ...
Math - A triangle has 2 angles that measure 60 each. Which of the following best...
Math - Triangle L'M'N' is a dilation of triangle LMN. If the scale factor of the...
Trigonometry/Geometry - Law of sines and cosines - In most geometry courses, we ...