Question

find the angle reflexion when the light ray strikes a mirror making and angle of 30° with the normal ​

Answer 1

Explanation:

Technology ("science of craft", from Greek τέχνη, techne, "art, skill, cunning of hand"; and -λογία, -logia) is the sum of techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation.