Question

(b_c)^2×cosA/2+(b+c)^2×sin^2A/2=​

Answer 1

Answer:

Prove that : (c-b)^2cos^2(A,2)+(c+b) ^2sin ^2(A,2)=a^2. ... 125.7 K SHARES. Prove that (1)`cos2A=2cos^2A-1` (2. play. 2:08. · इस पेज का अनुवाद करें