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:12
Step-by-step explanation:
4 by 3
so 4x3=12
Answer:
use khan academy
Step-by-step explanation:
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dont cheat dude
What problem I don't see anything
Answer:
-2y + 12
Step-by-step explanation:
3 - 2y +9
Combine the constants
-2y +3+9
-2y + 12
