Advertisements
Advertisements
प्रश्न
In ΔABC, point D divides AB in the ratio 5:7, Find: `"AE"/"AC"`
उत्तर
Considering BE || BC
`"AD"/"DB" = "AE"/"EC"`
⇒ `"AE"/"EC" = "AD"/"DB"`
⇒ `"AE"/"EC" =(5)/(7)`
∵ AC = AE + EC
⇒ AC
= 5 + 7
= 12
∴ `"AE"/"AC" = (5)/(12)` .
APPEARS IN
संबंधित प्रश्न
In the given figure, ΔODC~ΔOBA, ∠BOC = 115° and ∠CDO = 700.
Find (i) ∠DCO (ii) ∠DCO (iii) ∠OAB (iv) ∠OBA.
Two chords AB and CD of a circle intersect at a point P outside the circle.
Prove that: (i) Δ PAC ~ Δ PDB (ii) PA. PB = PC.PD
In the given figure, ABCD is a trapezium with AB || DC, AB = 18 cm, DC = 32 cm and the distance between AB and AC is 14 cm. If arcs of equal radii 7 cm taking A, B, C and D as centres, have been drawn, then find the area of the shaded region ?
In a right-angled triangle ABC, ∠B = 90°, P and Q are the points on the sides AB and AC such as PQBC, AB = 8 cm, AQ = 6 cm and PA:AB = 1:3. Find the lengths of AC and BC.
ΔABC is enlarged, with a scale factor 5. Find: BC, f B'C' = 16cm
A plot of land of area 20km2 is represented on the map with a scale factor of 1:200000. Find: The number of KM represented by 2cm on the map.
If ∆ABC ~ ∆DEF such that area of ∆ABC is 9 cm2 and the area of ∆DEF is 16 cm2 and BC = 2.1 cm. Find the length of EF.
D is the mid point of side BC and AE ⊥ BC. If BC = a, AC = b, AB = c, ED = x, AD = p and AE = h, prove that b2 = `"p"^2 + "a"x + "a"^2/4`
If ∆ABC – ∆PQR in which ∠A = 53° and ∠Q = 77°, then ∠R is
If ∆ABC ~ ∆QRP, `(ar(ABC))/(ar(PQR)) = 9/4`, AB = 18 cm and BC = 15 cm, then PR is equal to ______.
