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# How to solve arcsin arctan..etc

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1. how? i know that arcsin is the inverse of sin..etc but how do you solve them>?
2. (Original post by TheWolf)
how? i know that arcsin is the inverse of sin..etc but how do you solve them>?
If you give me an examle of a question, i will TRY to help
3. (Original post by Silly Sally)
If you give me an examle of a question, i will TRY to help

ehh dunno arcsin -0.5?
4. Actually i found a question from the P2 mock paper:

arctan x = 1
tan^-1 x = 1
x = tan1

Does that make any sense? You're basically using inverse - it is like normal trig, but instead of converting tanx ---> arctan to find x, we are doing the opposite.
5. (Original post by TheWolf)
ehh dunno arcsin -0.5?
Let y = arcsin(-1/2). Then sin(y) = -1/2 so y = -pi/6. Remember that arcsin of anything is between -pi/2 and pi/2.

Updated: June 20, 2004
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