posted by .

using the law of sines, solve the rest of the triangle:
side C=14
side B=4
angle c=145 degrees

i got
angle b= 9.4
angle a=25.6
side A=10.4
but i didn't know if it was correct

  • trigonometry -

    sin B/b = sin C/c
    sin B = (4/14) sin 145
    sin B = .1639
    B = 9.42

    A = 180 - B - C = 180 - 9.42 - 145 = 25.58
    so you have the right idea
    Angles are usually upper case, sides lower case.

  • trigonometry -

    thanks a bunch!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Angle question

    Quadrilateral JKLM is a rhombus. If mangleLMK = 36, find mangleKJM In the right triangle ABC, mangleB = 90, AB = 5, and AC= 12. Find BC. Round to the nearest tenth, if necessary. Help?
  2. maths

    Choose three options which are true: a) an angle of 150 degrees is equivalent to 2pie/3 radians. b) Cos 0 = cos (0 – pie/2) for al values of 0. c) Sin 0 = cos (0 – pie/2) for all values of 0. d) If triangle ABC has a right angle …
  3. Maths/Law of sines

    I have a spherical triangle and I know 1 angle 31.3 degrees and all 3 sides which are 1624, 2118.4 and 1078.85 nautical miles. In order to find the other 2 angles I know I must use the law of sines: sin A over a = sin B over b = sin …
  4. Pre-Calculus

    Solve the triangle. Round to the nearest tenth. B=54deg a=42 c=6.5 1. I found length of b using law of cosine and got 36.2 2. Using side of b, I used the law of sine to get angle A = 28.2 3. I added B+A and subtracted from 180 to get …
  5. math

    a triangle,side ac is 3/5 of side ab,and is 23.1 m. side ab is 7/9 of side bc.angle b is 1.5 times larger than angle c,and angle a is twice the size of angle many degrees is angle A
  6. Math help

    I am so lost I have a problem. Two congruet figures. First trapezoid: 1 side b is 10 1 short base prarallel 6 Angle D 86 degrees Angle C 41 degrees Angle B ?
  7. math problem

    In DABC, what could the 7 shown in the ratio sin A = 7/9 represent?
  8. algebra

    angles of a triangle The second angle of a garden triangle is four times as large as the first. the third angle is 45 degrees less than the sum of the other two angles. find the measure of each angle. 15 x 4=60 x 3 = 180 side a=15 …
  9. Math

    Which of the following triangles cannot be solved using the sine law?
  10. Math

    1. If Angle ABC is congruent to Angle DEF by side-side-side triangle congruence, the angle B is congruent to Angle E by?

More Similar Questions