Mathematics

Two angles measure $$(30-a)^0$$ and $$(125+2a)^0$$. If each one is the supplement of the other, then the value of a is :


ANSWER

$$25^0$$


SOLUTION
If angles are supplement then their sum is $${ 180 }^{ \circ  }$$
$$\therefore 30-a+125+2a={ 180 }^{ \circ  }\\ \Rightarrow 155+a={ 180 }^{ \circ  }\\ \Rightarrow a={ 180 }^{ \circ  }-{ 155 }^{ \circ  }\\ \Rightarrow a={ 25 }^{ \circ  }$$
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!


Single Correct Medium Published on 09th 09, 2020
Next Question
Questions 120418
Subjects 10
Chapters 88
Enrolled Students 86
Enroll Now For FREE

Realted Questions

Q1 Single Correct Medium
If $$j $$ and $$k$$ are parallel lines, mark the correct statements.
  • A. $$a=e$$
  • B. $$b=c$$
  • C. $$d=180-c$$
  • D. $$b+d=c+e$$

Asked in: Mathematics - Lines and Angles


1 Verified Answer | Published on 23rd 09, 2020

View Answer
Q2 Single Correct Medium
$$A$$ line $$AB$$ is parallel to the line $$CD$$. This is symbolically written as
  • A. $$\overleftrightarrow{AB}  \neq \overleftrightarrow{CD}$$
  • B. $$\overleftrightarrow{AB}  = \overleftrightarrow{CD}$$
  • C. $$\overleftrightarrow{AB}  \perp \overleftrightarrow{CD}$$
  • D. $$\overleftrightarrow{AB}  \parallel \overleftrightarrow{CD}$$

Asked in: Mathematics - Straight Lines


1 Verified Answer | Published on 17th 08, 2020

View Answer
Q3 Single Correct Medium
In fig, AB and CD are parallel to each others. The value of $$x$$ is :
  • A. $$90^{\circ}$$
  • B. $$120^{\circ}$$
  • C. $$140^{\circ}$$
  • D. $$100^{\circ}$$

Asked in: Mathematics - Straight Lines


1 Verified Answer | Published on 17th 08, 2020

View Answer
Q4 Subjective Medium
I an angle is $$28^{o}$$ less than its complement, find its measure.

Asked in: Mathematics - Lines and Angles


1 Verified Answer | Published on 09th 09, 2020

View Answer
Q5 Subjective Medium
From the adjoining figure find $$x$$,  i $$AOB$$ is a straight line. Hence complete the following 
Which is an acute angle?

Asked in: Mathematics - Lines and Angles


1 Verified Answer | Published on 09th 09, 2020

View Answer