Wednesday

October 1, 2014

October 1, 2014

Posted by **Anonymous** on Wednesday, August 1, 2012 at 4:34pm.

A. 3.1 and 20

B. 4.1 and 15

C. 15

D. 3.1

- Trigonometry -
**Henry**, Thursday, August 2, 2012 at 7:01pmUse Law of Cosines:

cosB = (a^2+c^2-b^2)/2ac.

0.58779 = (256+c^2-196)/32c

0.58779 = (c^2+60)/32c

Cross multiply:

18.81c = c^2+60

c^2-18.81c+60 = 0.

c = 4.1,and 14.7. Use Quadratic Formula.

**Answer this Question**

**Related Questions**

Trigonometry - Given triangle ABC with gamma = 61.0°, Beta = 29.0°, and b = 20.5...

Trigonometry - 1. What is the area of triangle ABC if a = 47.0°, β = 57.8...

Trigonometry - 1. What is the area of triangle ABC if a = 47.0°, β = 57.8...

trigonometry - 1. What is the area of triangle ABC if a = 47.0°, β = 57.8...

Trigonometry - Given triangle ABC with a = 16, b = 14, and Angle is = 54°, find ...

geometry - 1. The radius of the circumscribed circle of the triangle ABC is 15 ...

Math - 1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a...

Trigonometry - Find the exact value of tan2(Beta) if sin(Beta) = 5/13 (Beta in ...

Trigonometry - Find the exact value of tan2(Beta) if sin(Beta) = 5/13 (Beta in ...

9th grade - given that a(-1,8) ,b(2,4) and if the line y=4 is the axis of ...