For problem #5
Expanding the LHS and remembering that:
We get:
Now using:
and
We get:
Using:
]]>Problem #3 is not an identity.
It should read:
Now here is the proof for #3:
Now cross multiply:
Now substitute cosĀ²(A) = 1- sinĀ²(A) and clean up:
]]>Expand the LHS.
]]>I think I got the first one:
1.
Jose
]]>For #1)
Cross multiply and we have.
]]>PROVE THE FOLLOWING:-
1)
2)
3)
4)
5)
6)
I got these out of a maths textbook
]]>