Mathematics

In the adjoining figure, if $$\angle COA - \angle BOC = 50^o$$, find these angles.


SOLUTION
In the figure,
$$\angle COA - \angle BOC=50^{o}$$ ....... $$(i)$$ [Given]
We know that, $$\angle BOC+\angle COA=180^{o}$$
$$\implies \angle BOC+50^{o}+\angle COA=180^{o}$$
$$\implies 2\angle BOC=180^{o}-50^{o}=130^{o}$$
$$\implies \angle BOC=65^{o}$$
From $$(i)$$,
$$\angle COA -65^{o}=50^{o}$$
$$\implies \angle COA=115^{o}$$
Hence, $$\angle BOC=65^{o}$$ and $$ \angle COA=115^{o}$$
View Answers

You're just one step away

Create your Digital Resume For FREE on your name's sub domain "yourname.wcard.io". Register Here!


Subjective Medium Published on 09th 09, 2020
Next Question
Questions 120418
Subjects 10
Chapters 88
Enrolled Students 85
Enroll Now For FREE

Realted Questions

Q1 Subjective Hard
What is the need of introducing axioms?

Asked in: Mathematics - Introduction to Euclid’s Geometry


1 Verified Answer | Published on 09th 09, 2020

View Answer
Q2 Single Correct Medium
Ashok starts from point $$P$$ and walks $$5 kms$$ to the East. Bharat starts from the same point and walks $$5 kms$$ to the West. Now, Ashok takes a left turn and Bharat takes a right turn, and both walks $$5 kms$$ and stop. How far are they from each other at the point where they finally stop?
  • A. $$15 kms$$
  • B. $$5 kms$$
  • C. Can't be determined
  • D. $$10 kms$$

Asked in: Mathematics - Introduction to Euclid’s Geometry


1 Verified Answer | Published on 09th 09, 2020

View Answer
Q3 Single Correct Medium
In Ancient India, Altars with combination of shapes like rectangles, triangles and trapeziums were used for:
  • A. Household rituals
  • B. Both A and B
  • C. None of A, B, C
  • D. Public worship

Asked in: Mathematics - Introduction to Euclid’s Geometry


1 Verified Answer | Published on 09th 09, 2020

View Answer
Q4 Single Correct Medium
Who evaluated the approximate value of $$\pi$$?
  • A. Brahmagupta
  • B. Bhaskaracharya
  • C. Mahavira
  • D. Aryabhatta

Asked in: Mathematics - Introduction to Euclid’s Geometry


1 Verified Answer | Published on 09th 09, 2020

View Answer
Q5 Single Correct Easy
Euclid stated that all right angles are equal to each other in the form of
  • A. an axiom
  • B. a definition
  • C. a proof
  • D. a postulate

Asked in: Mathematics - Introduction to Euclid’s Geometry


1 Verified Answer | Published on 09th 09, 2020

View Answer