Question

Write an experimental procedure to observe different types of images formed by concave mirror to measure object distance and image distances.

Answer 1

Answer:

Adjacent angles of a parallelogram are supplementary) ∴ 5x + 4x = 180º ⇒ 9x = 180º ⇒ x = 20º ∴ Measure of ∠ B = 4x = 4 × 20º = 80º

Missing: lengthB ‎| Must include: lengthB