Advertisements
Advertisements
Question
The angles of a triangle are in the ratio 3 :2 : 7. Find each angle.
Advertisements
Solution
Ratio in angles of a triangle = 3:2:7
Sum of ratios = 3 + 2 + 7=12
Sum of angles of a triangle = 180°
∴ First angle = `3/12 xx 180° = 45°`
Second angle = `2/12` x 180°= 30°
Third angle =`7/12` x 180°= 105°
APPEARS IN
RELATED QUESTIONS
If (3a + 2b) : (5a + 3b) = 18 : 29. Find a : b
Find the compound ratio of 2a : 3b, mn : x2 and x : n
If (p – x) : (q – x) be the duplicate ratio of p : q then show that : `1/p + 1/q = 1/x`.
Find the compounded ratio of the following:
15: 16 and 8 : 5
If `"a"/"b" = "c"/"d"`, show that: `(a^3c + ac^3)/(b^3d + bd^3) = ("a" + "c")^4/("b" + "d")^4`
Find the ratio between 3.5 m, 475 cm and 2.8 m
In class X of a school, the ratio of the number of boys to that of the girls is 4 : 3. If there were 20 more boys and 12 less girls, then the ratio would have been 2 : 1, How many students were there in the class?
If the cost of 30 packets of 8 pencils each is Rs 600, what is the cost of 25 packets of 12 pencils each?
10 boys can dig a pitch in 12 hours. How long will 8 boys take to do it?
If the ratio of Green, Yellow and Black balls in a bag is 4 : 3 : 5, then
(a) Which is the most likely ball that you can choose from the bag?
(b) How many balls in total are there in the bag if you have 40 black balls in it?
(c) Find the number of green and yellow balls in the bag.
