OBLIQUE TRIANGLES

Law of Sines

Law of Cosines

Both

Neither

Law of Sines

Law of Cosines

Pythagorean Theorem

None of the above

27.99 units

21.74 units

18.84 units

13.59 units

52

$52\sqrt{2}$

$\frac{52\sqrt{6}}{3}$

$26\sqrt{3}$

$\frac{\sin\ 51.3}{81\degree}=\frac{\sin\ AC}{85\degree}$

$\frac{51.3}{\sin\ 81\degree}=\frac{\sin\ 85\degree}{AC}$

$\frac{51.3}{\sin\ 81\degree}=\frac{AC}{\sin\ 85\degree}$

$\frac{51.3}{\sin\ 85\degree}=\frac{AC}{\sin\ 81\degree}$

 $\cos^{-1}\ \frac{a^2+b^2-c^2}{2ab}$  

 $\cos^{-1}\ \frac{b^2+c^2-a^2}{2bc}$ 

 $\cos^{-1}\ \frac{a^2+b^2-c^2}{2ab}$ 

 $\cos^{-1}\ \frac{a^2+c^2-b^2}{2ac}$ 

$PR^2=9.2+8.5-\left(9.2\right)\left(8.5\right)\cos\ 89\degree$

$PR^2=9.2^2+8.5^2-\left(9.2\right)^2\left(8.5\right)^2\cos\ 89\degree$

$PR^2=9.2^2+8.5^2-2\left(9.2\right)\left(8.5\right)\cos\ 89\degree$

$PR^2=9.2^2+8.5^2+2\left(9.2\right)\left(8.5\right)\cos\ 89\degree$

$100.8\degree$

$47.45\degree$

$31.75\degree$

$27.02\degree$