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<!DOCTYPE html> <html> <body> <?php echo(sinh(3) . "<br>"); echo(sinh(-3) . "<br>"); echo(sinh(0) . "<br>"); echo(sinh(M_PI) . "<br>"); echo(sinh(M_PI_2)); ?> </body> </html>
10.01787492741
-10.01787492741
0
11.548739357258
2.3012989023073