299251
Directions: In the following questions, the Assertions (A) and Reason(s) (R) have been put forward. Read both the statements carefully and choose the correct alternative from the following: Assertion: 60° is the complement of 30° Reason: The complement angle of 80° is 10°
1 Both assertion and reason are correct and reason is the correct explanation for assertion.
2 Both assertion and reason are correct but reason is not correct explanation for assertion.
3 Assertion is true but reason is false.
4 Both assertion and reason are false.
Explanation:
Both assertion and reason are correct but reason is not correct explanation for assertion.
LINES AND ANGLES
299252
In the given figure, the value of y is: 8
1 30°
2 15°
3 20°
4 22.5°
Explanation:
20° Since, sum of all the angles on a straight line is 180°. Therefore, \(6\text{y}+\text{y}+2\text{y}=180^\circ\) \(\Rightarrow9\text{y}=180^\circ\) \(\Rightarrow\frac{180^\circ}{9}\) \(\therefore\text{y}=20^\circ\)
LINES AND ANGLES
299253
In Fig. AOB is a straight line and 4x = 5y. The value of x is: 9
299254
Complementary angle of \(72\frac{1^\circ}{2}\) is:
1 \(17^\circ\)
2 \(18\frac{1^\circ}{2}\)
3 \(21\frac{1^\circ}{2}\)
4 \(17\frac{1^\circ}{2}\)
Explanation:
\(17\frac{1^\circ}{2}\) Given angle is 72.5 or \(72\frac{1^\circ}{2}\) Let the other angle = x Sum of complementary angles \(=90^\circ\Rightarrow\text{x}+72\frac{1^\circ}{2}=90^\circ\) \(\Rightarrow\text{x}=17\frac{1^\circ}{2}\)
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LINES AND ANGLES
299251
Directions: In the following questions, the Assertions (A) and Reason(s) (R) have been put forward. Read both the statements carefully and choose the correct alternative from the following: Assertion: 60° is the complement of 30° Reason: The complement angle of 80° is 10°
1 Both assertion and reason are correct and reason is the correct explanation for assertion.
2 Both assertion and reason are correct but reason is not correct explanation for assertion.
3 Assertion is true but reason is false.
4 Both assertion and reason are false.
Explanation:
Both assertion and reason are correct but reason is not correct explanation for assertion.
LINES AND ANGLES
299252
In the given figure, the value of y is: 8
1 30°
2 15°
3 20°
4 22.5°
Explanation:
20° Since, sum of all the angles on a straight line is 180°. Therefore, \(6\text{y}+\text{y}+2\text{y}=180^\circ\) \(\Rightarrow9\text{y}=180^\circ\) \(\Rightarrow\frac{180^\circ}{9}\) \(\therefore\text{y}=20^\circ\)
LINES AND ANGLES
299253
In Fig. AOB is a straight line and 4x = 5y. The value of x is: 9
299254
Complementary angle of \(72\frac{1^\circ}{2}\) is:
1 \(17^\circ\)
2 \(18\frac{1^\circ}{2}\)
3 \(21\frac{1^\circ}{2}\)
4 \(17\frac{1^\circ}{2}\)
Explanation:
\(17\frac{1^\circ}{2}\) Given angle is 72.5 or \(72\frac{1^\circ}{2}\) Let the other angle = x Sum of complementary angles \(=90^\circ\Rightarrow\text{x}+72\frac{1^\circ}{2}=90^\circ\) \(\Rightarrow\text{x}=17\frac{1^\circ}{2}\)
299251
Directions: In the following questions, the Assertions (A) and Reason(s) (R) have been put forward. Read both the statements carefully and choose the correct alternative from the following: Assertion: 60° is the complement of 30° Reason: The complement angle of 80° is 10°
1 Both assertion and reason are correct and reason is the correct explanation for assertion.
2 Both assertion and reason are correct but reason is not correct explanation for assertion.
3 Assertion is true but reason is false.
4 Both assertion and reason are false.
Explanation:
Both assertion and reason are correct but reason is not correct explanation for assertion.
LINES AND ANGLES
299252
In the given figure, the value of y is: 8
1 30°
2 15°
3 20°
4 22.5°
Explanation:
20° Since, sum of all the angles on a straight line is 180°. Therefore, \(6\text{y}+\text{y}+2\text{y}=180^\circ\) \(\Rightarrow9\text{y}=180^\circ\) \(\Rightarrow\frac{180^\circ}{9}\) \(\therefore\text{y}=20^\circ\)
LINES AND ANGLES
299253
In Fig. AOB is a straight line and 4x = 5y. The value of x is: 9
299254
Complementary angle of \(72\frac{1^\circ}{2}\) is:
1 \(17^\circ\)
2 \(18\frac{1^\circ}{2}\)
3 \(21\frac{1^\circ}{2}\)
4 \(17\frac{1^\circ}{2}\)
Explanation:
\(17\frac{1^\circ}{2}\) Given angle is 72.5 or \(72\frac{1^\circ}{2}\) Let the other angle = x Sum of complementary angles \(=90^\circ\Rightarrow\text{x}+72\frac{1^\circ}{2}=90^\circ\) \(\Rightarrow\text{x}=17\frac{1^\circ}{2}\)
299251
Directions: In the following questions, the Assertions (A) and Reason(s) (R) have been put forward. Read both the statements carefully and choose the correct alternative from the following: Assertion: 60° is the complement of 30° Reason: The complement angle of 80° is 10°
1 Both assertion and reason are correct and reason is the correct explanation for assertion.
2 Both assertion and reason are correct but reason is not correct explanation for assertion.
3 Assertion is true but reason is false.
4 Both assertion and reason are false.
Explanation:
Both assertion and reason are correct but reason is not correct explanation for assertion.
LINES AND ANGLES
299252
In the given figure, the value of y is: 8
1 30°
2 15°
3 20°
4 22.5°
Explanation:
20° Since, sum of all the angles on a straight line is 180°. Therefore, \(6\text{y}+\text{y}+2\text{y}=180^\circ\) \(\Rightarrow9\text{y}=180^\circ\) \(\Rightarrow\frac{180^\circ}{9}\) \(\therefore\text{y}=20^\circ\)
LINES AND ANGLES
299253
In Fig. AOB is a straight line and 4x = 5y. The value of x is: 9
299254
Complementary angle of \(72\frac{1^\circ}{2}\) is:
1 \(17^\circ\)
2 \(18\frac{1^\circ}{2}\)
3 \(21\frac{1^\circ}{2}\)
4 \(17\frac{1^\circ}{2}\)
Explanation:
\(17\frac{1^\circ}{2}\) Given angle is 72.5 or \(72\frac{1^\circ}{2}\) Let the other angle = x Sum of complementary angles \(=90^\circ\Rightarrow\text{x}+72\frac{1^\circ}{2}=90^\circ\) \(\Rightarrow\text{x}=17\frac{1^\circ}{2}\)
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