diff --git a/lab2.cc b/lab2.cc
new file mode 100644
index 0000000..cf81d1c
--- /dev/null
+++ b/lab2.cc
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <math.h>
+#define PI 3.1415926
+
+int main() {
+ float z1, z2, a;
+ printf("Введите значение: ");
+ scanf("%f", &a);
+ z1 = cos(3.0/8.0*PI-a/4)*cos(3.0/8.0*PI-a/4)-cos(11./8.0*PI+a/4)*cos(11.0/8.0*PI+a/4);
+ z2 = sqrt(2)/2*sin(a/2);
+ printf("z1=%f\n", z1);
+ printf("z2=%f\n", z2);
+}
\ No newline at end of file