Select Board & Class
let o be a point inside a triangle ABC such that angle OAC=angle OCB= angle OBA= alpha .then prove that
1)cota +cot b + cot c=cot alpha
2) cosec2a+cosec2b+cosec2c= cosec2alpha
How many states in India?
Copyright © 2020 Applect Learning Systems Pvt. Ltd. All rights reserved.
E.g: 9876543210, 01112345678
We will give you a call shortly, Thank You
Office hours: 9:00 am to 9:00 pm IST (7 days a week)