Advertisements
Advertisements
Question
Two complementary angles are in the ratio 7 : 8. Find the angles.
Solution
Let two complementary angles are 7x and 8x
∴ 7x + 8x = 90°
⇒ 15x = 90°
⇒ x = `(90°)/15`
⇒ x = 6°
∴ Two complementary angles are
7x = 7 x 6° = 42°
8x = 8 x 6° = 48°
APPEARS IN
RELATED QUESTIONS
In the given figure ; AOC-is a straight line. If angle AOB = 50°, angle AOE = 90° and angle COD = 25° ; find the measure of:
(i) angle BOC
(ii) angle EOD
(iii) obtuse angle BOD
(iv) reflex angle BOD
(v) reflex angle COE.
In the given figure if: b = 200 ; find a.
In the given diagram, ABC is a straight line. If x = 53°, find y.
In the given figure, lines AB and CD intersect at point O.
(i) Find the value of ∠a.
(ii) Name all the pairs of vertically opposite angles.
(iii) Name all the pairs of adjacent angles.
(iv) Name all the reflex angles formed and write the measure of each.
50% of 120°
Find the angle that is equal to its supplement?
Two supplementary angles are in the ratio 7 : 11. Find the angles.
The measures of two complementary angles are (2x – 7)° and (x + 4)°. Find x.
Explain what do you understand by Adjacent angles?
For an angle y°, find:
(i) its supplementary angle.
(ii) its complementary angle.
(iii) the value of y° if its supplement is four times its complement.
