Question

C С
С
2
2 C
4R cos + 4R sin
2
= 4R
2
C
2
= 4R Cos
/?
C
+ sin?
2 2
= 4R (1) = 4R
11. Prove that r + rz + ri - r2 = 4R cos B
(Mar-2018(AP), 2012
: Consider rir + r-ra​

Answer 1

Answer:

I. All potteries can never be metals.