delete mode 100644 lib/libc/musl/src/math/cos.c
 delete mode 100644 lib/libc/musl/src/math/cosf.c
 delete mode 100644 lib/libc/musl/src/math/sin.c
 delete mode 100644 lib/libc/musl/src/math/sincos.c
 delete mode 100644 lib/libc/musl/src/math/sincosf.c
 delete mode 100644 lib/libc/musl/src/math/sinf.c
 delete mode 100644 lib/libc/musl/src/math/tan.c
 delete mode 100644 lib/libc/musl/src/math/tanf.c