Verified answer

press the following in proper order

1

5

6

division sign

Sin

2

0

equal sign

then you have the answer

make sure your calculator is in degree mode

make sure your calculator is on Degree mode. If it's on Radian it will give you a different answer.

type 156 / sin (20) and you should get your answer.

if you are using law of sines you need to multiply 156 by the sin of the opposite angle of that side before you divide by sin(20)