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Introduction to the use of Math. atan () in JavaScript
This method returns the arc tangent of radians. The atan method returns a number between-pi/2 and π/2 radian.
Syntax
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Math. atan (x ); |
The following is the detailed information about the parameters:
Return Value:
Example:
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<Html> <Head> <Title> JavaScript Math atan () Method </title> </Head> <Body> <Script type = "text/javascript">
Var value = Math. atan (-1 ); Document. write ("First Test Value:" + value );
Var value = Math. atan (. 5 ); Document. write ("<br/> Second Test Value:" + value );
Var value = Math. atan (30 ); Document. write ("<br/> Third Test Value:" + value );
Var value = Math. atan ("string "); Document. write ("<br/> Fourth Test Value:" + value ); </Script> </Body> </Html> |
This produces the following results:
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First Test Value:-0.7853981633974483 Second Test Value: 0.4636476090008061 Third Test Value: 1.5374753309166493 Fourth Test Value: NaN |
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