NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 5: Lines And Angles - Problems and SolutionsQuestion 93
Class 7 - Mathematics - Unit 5: Lines And Angles - Problems and Solutions
Question. 93
93. In Fig. 5.50, OB is perpendicular to OA and ∠BOC = 49°. Find ∠AOD.
Answer:
139°
Detailed Answer with Explanation:
Since OB ⟂ OA, ∠BOA = 90°. Also ∠AOD = ∠BOA + ∠BOC = 90° + 49° = 139°.