Assess students' recall and application of common trigonometric identities (Pythagorean, reciprocal, quotient, co-function, even–odd, and basic sum/difference) and their ability to compute exact sine, cosine, and tangent values for standard angles 0°, 30°, 45°, 60°, and 90°. Include tasks that require simplifying expressions using identities and evaluating or verifying exact-value expressions (e.g., sin45°·cos30° − tan60°).