Get premium membership and access questions with answers, video lessons as well as revision papers.

Find the radius of the circum-circle of a triangle in which angle A = 69o and a = 3.95 cm.

      

Find the radius of the circum-circle of a triangle in which angle A = 69o and a = 3.95 cm. Give your answer to four significant figures

  

Answers


John
$\frac{a}{sin A}$ = 2R;

$\frac{3.95}{sin\; 69^o}$ = 2R

$\frac{3.95}{2(sin\; 69^o)}$ = R;R = $\frac{3.95}{1.867}$

R = 2.116

Radius of the circumcircle is

2.116 cm


johnmulu answered the question on March 7, 2017 at 09:00


Next: Evaluate$\frac{2}{2 +\sqrt3} + \frac{2 \sqrt3}{2 - \sqrt3} = a + b\sqrt3$
Previous: Solve the equation 4sin (2x + 30)o = -$\sqrt3$ in the range -90o < x <180o

View More Mathematics Questions and Answers | Return to Questions Index


Learn High School English on YouTube

Related Questions