if A,B,C be the angles of a triangle and cos theta(sinB+sinC)=sinA, then prove that tan^2(theta/2)=tan(B/2)tan(C/2)

if A,B,C be the angles of a triangle and cos theta(sinB+sinC)=sinA, th

Book a Trial With Our Experts

Please choose valid name

Please Enter the valid Email

Please Enter the valid mobile number

Please choose the valid grade

Please choose the valid subject

Join now for JEE/NEET and also prepare for Boards Learn Science & Maths Concepts for JEE, NEET, CBSE @ Rs. 99! Register Now

Hey there!
We receieved your request

Stay Tuned as we are going to contact you within 1 Hour

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.

Click to Chat

1800-5470-145

+91 7353221155

CART 0

0
Welcome

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM

DETAILS

MRP

DISCOUNT

FINAL PRICE

Parabola has been removed from your cart

Total Price: Rs.

⇐ Back Proceed to Checkout ⇒

There are no items in this cart.
Continue Shopping

Welcome User

Connect with Facebook

We promise that your information will be our little secret. To know more please see our Privacy Policy

+91

Connect with Facebook

Forgot Password ?

Complete Your Registration (Step 2 of 2 )

+91

Studying in Grade 6th to 12th?

Get one to one academic counselling from IITians or Medical Professionals

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Phone Number

Continue with Google

Enter Your Details

Full Name Enter Email Id Select grade of the Student

Registration done!

Sit and relax as our customer representative will contact you within 1 business day

Mobile Verification

OTP to be sent to Change

Enter 6 digit OTP

Create an account / Login
Welcome
IIT JEE
NEET
SAT
CBSE
Study Center
Resources
Ask a Question
NRI Section
- UAE
  - UAE
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Dubai
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Sharjah
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Abu Dhabi
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
- Saudi Arabia
  - Saudi Arabia
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Jeddah
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Riyadh
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Dammam
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Al Jubail
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
- Qatar
  - Qatar
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Doha
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
- Oman
  - Oman
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Muscat
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Salalah
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
- Bahrain
  - Bahrain
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Manama
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
- Kuwait
  - Kuwait
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Mahboula
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
  - Salmiya
    - Online Tutoring
    - IIT JEE
    - NEET
    - AIIMS
- Indonesia
  - Online Tutoring
  - IIT JEE
  - NEET
  - AIIMS
- Malaysia
  - Online Tutoring
  - IIT JEE
  - NEET
  - AIIMS
- Singapore
  - Online Tutoring
  - IIT JEE
  - NEET
  - AIIMS
- Uganda
  - Online Tutoring
  - IIT JEE
  - NEET
  - AIIMS
- USA
  - Online Tutoring
  - IIT JEE
  - NEET
  - AIIMS
- View complete NRI Section
Past Papers
- Engineering Exams
  - JEE Main
  - JEE Advanced
  - BITSAT
  - Karnataka CET
  - DCE
  - EAMCET
- Medical Exams
  - NEET
  - AIIMS
  - Manipal UGET
- School Exams
  - KVPY
  - NTSE
  - Olympiads
  - Class 12
  - Class 11
  - Class 10
  - Class 9
  - Class 8
  - Class 7
  - Class 6
Notes
- Study Material (JEE/NEET)
- Study Notes (JEE/NEET)
NCERT Solutions
Blog

Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

Thank you for registering.

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Enter Your Details

Registration done!

if A,B,C be the angles of a triangle and cos theta(sinB+sinC)=sinA, then prove that tan^2(theta/2)=tan(B/2)tan(C/2)

if A,B,C be the angles of a triangle and cos theta(sinB+sinC)=sinA, then prove that tan^2(theta/2)=tan(B/2)tan(C/2)

1 Answers

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on Trigonometry

ASK QUESTION

Answer and earn gift vouchers

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Complete Self Study Package designed by Industry Leading Experts

Live 1-1 coding classes to unleash the Creator in your Child

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Register Now & Win Upto 25% Scholorship