diff --git a/cases/arithmetic/cos.yaml b/cases/arithmetic/cos.yaml
new file mode 100644
index 00000000..544e34fc
--- /dev/null
+++ b/cases/arithmetic/cos.yaml
@@ -0,0 +1,46 @@
+function: cos
+cases:
+  - group:
+      id: basic
+      description: Basic examples without any special cases
+    args:
+      - value: 0.01
+        type: fp32
+    result:
+      value: 0.9999500004189004
+      type: fp32
+  - group: basic
+    args:
+      - value: 4.5
+        type: fp32
+    result:
+      value: -0.2107957994307797
+      type: fp32
+  - group: basic
+    args:
+      - value: 1
+        type: fp64
+    result:
+      value: 0.5403023058681398
+      type: fp64
+  - group: basic
+    args:
+      - value: 7.00000095367431640625
+        type: fp64
+    result:
+      value: 0.7539016277917163
+      type: fp64
+  - group: basic
+    args:
+      - value: -7.00000095367431640625
+        type: fp64
+    result:
+      value: 0.7539016277917163
+      type: fp64
+  - group: basic
+    args:
+      - value: null
+        type: fp64
+    result:
+      value: null
+      type: fp64
diff --git a/cases/arithmetic/sin.yaml b/cases/arithmetic/sin.yaml
new file mode 100644
index 00000000..081b79d3
--- /dev/null
+++ b/cases/arithmetic/sin.yaml
@@ -0,0 +1,46 @@
+function: sin
+cases:
+  - group:
+      id: basic
+      description: Basic examples without any special cases
+    args:
+      - value: 0.01
+        type: fp32
+    result:
+      value: 0.009999833110660423
+      type: fp32
+  - group: basic
+    args:
+      - value: 4.5
+        type: fp32
+    result:
+      value: -0.977530117665097
+      type: fp32
+  - group: basic
+    args:
+      - value: 1
+        type: fp64
+    result:
+      value: 0.8414709848078965
+      type: fp64
+  - group: basic
+    args:
+      - value: 7.00000095367431640625
+        type: fp64
+    result:
+      value: 0.6569873176957074
+      type: fp64
+  - group: basic
+    args:
+      - value: -7.00000095367431640625
+        type: fp64
+    result:
+      value: -0.6569873176957074
+      type: fp64
+  - group: basic
+    args:
+      - value: null
+        type: fp64
+    result:
+      value: null
+      type: fp64
diff --git a/dialects/datafusion.yaml b/dialects/datafusion.yaml
index 8cbb1d02..6cd37c08 100644
--- a/dialects/datafusion.yaml
+++ b/dialects/datafusion.yaml
@@ -34,6 +34,16 @@ scalar_functions:
       - args:
           - fp32
         result: fp32
+  - name: cos
+    unsupported_kernels:
+      - args:
+          - fp32
+        result: fp32
+  - name: sin
+    unsupported_kernels:
+      - args:
+          - fp32
+        result: fp32
   - name: factorial
     unsupported: True
   - name: abs
diff --git a/dialects/duckdb.yaml b/dialects/duckdb.yaml
index 0bb09281..3a48aba0 100644
--- a/dialects/duckdb.yaml
+++ b/dialects/duckdb.yaml
@@ -43,6 +43,8 @@ scalar_functions:
     required_options:
       overflow: ERROR
       rounding: TIE_TO_EVEN
+  - name: cos
+  - name: sin
   - name: factorial
     unsupported: true
   - name: abs
diff --git a/dialects/postgres.yaml b/dialects/postgres.yaml
index 31403c1a..88eb1e75 100644
--- a/dialects/postgres.yaml
+++ b/dialects/postgres.yaml
@@ -82,6 +82,8 @@ scalar_functions:
     required_options:
       on_domain_error: ERROR
   - name: exp
+  - name: cos
+  - name: sin
   - name: factorial
   - name: abs
     required_options:
diff --git a/dialects/sqlite.yaml b/dialects/sqlite.yaml
index 8e37e9c3..cb7056e4 100644
--- a/dialects/sqlite.yaml
+++ b/dialects/sqlite.yaml
@@ -43,6 +43,8 @@ scalar_functions:
     required_options:
       on_domain_error: NONE
   - name: exp
+  - name: cos
+  - name: sin
   - name: factorial
     unsupported: True
   - name: abs
diff --git a/dialects/velox_presto.yaml b/dialects/velox_presto.yaml
index 025c71c5..0e6c46c4 100644
--- a/dialects/velox_presto.yaml
+++ b/dialects/velox_presto.yaml
@@ -137,6 +137,16 @@ scalar_functions:
       - args:
           - fp32
         result: fp32
+  - name: cos
+    unsupported_kernels:
+      - args:
+          - fp32
+        result: fp32
+  - name: sin
+    unsupported_kernels:
+      - args:
+          - fp32
+        result: fp32
   - name: factorial
     unsupported: True
   - name: abs