An artist wants to paint 15 pictures in three months she only starts a new picture when she is done with the previous one use re
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hmm, seems that we can say that the square root thing is the g(x)
I would say
we could also have
or
there are many posibilities
Recall the important identities:
i)
, the difference of squares formula.
ii)
, for any angle x.
Then,
from i)
then, from ii), we have
Answer: cos(theta)
i)
ii)
Then,
from i)
then, from ii), we have
Answer: cos(theta)