Home
Class 11
MATHS
In DeltaABC, a =125, b=62 and c=123, fin...

In `DeltaABC`, a =125, b=62 and c=123, find the value of sinB.

Text Solution

Verified by Experts

a=96, b=104, c=40
`s=(a+b+c)/(2)=(96+104+40)/(2)=120`
and `Delta=sqrt(s(s-a)(s-b)(s-c))`
`=sqrt(120(120-96)(120-104)(120-40))`
`=sqrt(120xx 24 xx 16 xx 80)`
`=1920` sq. unit. Ans.
Promotional Banner

Topper's Solved these Questions

  • TRIGNOMETRIC FUNCTIONS

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISES 3A|12 Videos

  • TRIGNOMETRIC FUNCTIONS

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISES 3B|24 Videos

  • STRAIGHT LINES

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise|207 Videos

Similar Questions

Explore conceptually related problems

In DeltaABC , a=7, b=5 and c=8, then find the value of cos2B.

In DeltaABC, a = 3, b = 5, c = 6 , find the value of : sin (A/2)

In DeltaABC, a = 3, b = 5, c = 6 , find the value of : cos (A/2)

In DeltaABC, a = 3, b = 5, c = 6 , find the value of : tan (A/2)

In DeltaABC , if a=25, b = 52 and c =63 , find cos A

In DeltaABC, a = 3, b = 4 and c = 5 , then value of sinA + sin2B + sin3C is

In DeltaABC, a = 3, b = 4 and c = 5 , then value of sinA + sin2B + sin3C is

In DeltaABC , a=25,b=52, c=63, find cot(A/2) .

In DeltaABC, a = 3, b = 5, c = 6 , find the value of : cot (A/2)

In DeltaABC, a=4, b=6, c=8 , then find the value of 8 cos A + 16 cos B + 4 cos C .