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# simple math problem...sin theta=.90675?

im just trying to find theta.. but i cant figure out how you do it. i know its really easy but i totally forget. i just made up that number really any number will work.

thanks

### 3 Answers

- Anonymous1 decade agoFavorite Answer
IN THE CALCULATOR you need to use the ( sin ^-1 X) key.

Usually they are underlying beneath the (sin x) key, Just use the (second function key) and then the sin key.

In my calculator I got tetha = 65.06 degrees.

ANSWER

- Anonymous1 decade ago
This is when you use the arcsin function. Set the equation equal to theta like

theta = arcsin .90675

theta = 65.06 degrees

And don't forget to put your calculator in degrees and not radians.

Have a good day!

- Barry GLv 71 decade ago
on you calculator use the sin-1 key.I make it 65.06 degrees.

that's only one value, though. another is 180 - 65.06 = 114.94 degrees.

starting from those two values you can then add or subtract any multiple of 360 degrees.