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Inverse Sin for critical angle
Daniela_5535
#1 Posted : Tuesday, June 09, 2020 4:16:57 AM
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Hello,

I was just wondering if anyone has any tips on knowing how to calculate the inverse sin (critical angle) ?

Thanks !
INSTR_Amira_87
#2 Posted : Wednesday, June 10, 2020 3:05:10 PM
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Hello! I personally like to use the method of special triangles for this. Try to approximate whatever is in the brackets to a special triangle (ex: sin^(-1)(8/15) ~ sin(-1)(1/2) = 30 degrees). Others like to use the unit circle which also works well. Hope this helps!
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