In ∆ABC, if a=(b+c)costheta, then prove that sintheta

preview_player
Показать описание
Jr.Inter|Maths-1A|AP 2019 Question-17|In ∆ABC, if a=(b+c)costheta, then prove that sintheta=(2√bc/(b+c))cos(A/2)
#maths #mathematics #hpl #mathssolutions #solutions #inter #intermediate #1a #2019 #important #board #boardexam #jr #trigonometry#intermaths #hard #intermaths1a #maths1a
  1. Maths Solutions by HPL
  2. maths
  3. mathematics
  4. solutions
  5. HPL
  6. inter
Рекомендации по теме
In an acute 0:08:27

In an acute angled triangle ABC if sin (A + B - C) = 1/2 and cos (B+C-A) = 1/√2. Find A B C

In ∆ABC, if 0:00:34

In ∆ABC, if a=(b+c)costheta, then prove that sintheta

If `A,B,C` are 0:01:26

If `A,B,C` are in A.P then `(sinA-sinC)/(cosC-cosA)=`

In triangle ABC, 0:04:42

In triangle ABC, if (a+b+c)(b+c-a) = 3bc, state which of the following is the value of the angle...

In a \( 0:07:14

In a \( \triangle A B C \) if \( c=(a+b) \sin \theta \) and \( \cos \theta=\frac{k \sqrt{a b}}{a...

In a `Delta 0:03:07

In a `Delta ABC` if `b+c=2a` and `/_A=60^@` then `Delta ABC` is

If angles A, 0:01:57

If angles A, B, C of a ∆ABC form an increasing AP, then sinB =

In an acute 0:02:48

In an acute angled triangle ABC, if sin (A + B - C) = ½ and cos (B + C – A) = 1/√2, find ∠A,∠B and...

If `sin theta 0:04:49

If `sin theta = a/(b+c)` then show that `cos theta = (2sqrt(bc))/(b+c) cos |Class 12 MATH | Doubtnut

if a:b:c = 0:03:37

if a:b:c = 7:8:9, find cosA : cosB : cosC | PROPERTIES OF TRIANGLES | INTERMEDIATE 1st | CLASS 11

In an acute 0:15:10

In an acute angled triangle ABC, if sin(A+B+C) = 1/2 and cos(B+C+A) = 1/2, find angle A, B and C.

IIT Bombay CSE 0:00:11

IIT Bombay CSE 😍 #shorts #iit #iitbombay

Trying transition video 0:00:15

Trying transition video for the first time 💙😂 || #transformation #transition #shorts #viralvideo...

If A,B,C are 0:03:47

If A,B,C are interior angles of a triangle ABC, then show that Sin(B+C)/2 = Cos A/2

If A, B 0:02:31

If A, B and C are interior angles of a triangle ABC, then show that sin((B+C)/2)=cosA/2\n. | 10 ...

if A, B 0:03:07

if A, B and C are interior angles of a `triangle` ABC, then show that `cos((B+C)/2)` = `sin (A/2)`

If sin (A+B-C) 0:04:53

If sin (A+B-C) = 1/2 and cos (B+C-A) = 1/ root 2. Then find A , B and C

If in ∆ABC 0:01:40

If in ∆ABC angle C = 90° then sin(A+B)=?(Beautiful trigonometry problem) #ncert #india #maths

If A,B ,C 0:03:05

If A,B ,C are the angle of ` Delta ABC ` then ` cot A .cot B + cot B . '' cot C...

In an acute 0:00:59

In an acute angled triangle ABC, if tan(A+B−C)=1 and, sec(B+C−A)=2, find the value of A, B and C....

One Day Before 0:00:16

One Day Before 😂 Maths Exam || Hard Working 😭 || #shorts #youtubeshorts #motivation

In an acute 0:03:34

In an acute A B C, if tan (A+B-C)=1 and sec (B+C-A)=2, find the angles A, B and C.

If `A, B 0:06:03

If `A, B , C `are angles of a triangle, then `P. T sin ^(2) . (A)/(2)+ |Class 12 MATH | Doubtnut

If in `triangle 0:04:11

If in `triangle ABC`, with usual notations , `a=18,b=24,c=30`, then `sin.(A)/(2)` is equal to