Question

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Answer 1

you meant ∠A and ∠B.

Answer 2

yes :)

Answer 3

can you find the hypotenuse?
\[Hint:~~~~use ~~~~~~~a^2+b^2=c^2\]

Answer 4

oh, use that?
52
=2 (sqrt13)

Answer 5

so.. i can use sinA... right? @SolomonZelman

Answer 6

YES, sines law!!!

Answer 7

\[∠A = \frac{ a }{ c } = \frac{ 6 }{ 2\sqrt{13} } = \frac{ 3\sqrt{13} }{ 13 }\]

Answer 8

aw, okay thanks :D

Answer 9

\[\frac{SinC}{c}=\frac{SinB}{b},~~~~~~~\frac{Sin90}{7.21}=\frac{SinB}{4}\]

Answer 10

find B, and then simple sum of angles is 180.