Thank you for registering.

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

Please check your email for login details.
MY CART (5)

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

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

IN TRIANGLE ABC 2acsin1/2(A-B+C)=

IN TRIANGLE ABC  2acsin1/2(A-B+C)=

Grade:11

1 Answers

Lab Bhattacharjee
121 Points
5 years ago
A-B+C=\pi-2B\\ \implies\sin\dfrac{A-B+C}2=\cos B\\ \text{Now, }\cos B=\dfrac{c^2+a^2-b^2}{2ca}

Think You Can Provide A Better Answer ?

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

ASK QUESTION

Get your questions answered by the expert for free

10th iCAT Scholarship Test Registration Form