A. 3a b. a^3 c. 4x d. 3pq e. 7^ef f. zxy^1
Step-by-step explanation:
L.H.S=(1-cosB)(1+cosB)
=(1-cos^2B). {using (a+b) (a-b)=(a^2-b^2)in second step}
=sin^2B
=1/cosec^2B
Therefore,L.H.S=R.H.S proved
Answer:
d because it does not looks somlar
Answer:11
Step-by-step explanation: think about 5+6 then when you add 11 to the -5 you get 6.
