Math B- two questions-----> Use trig identities and explain reasioning please.?

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03-01-2008, 09:52 PM

sarah d

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Math B- two questions-----> Use trig identities and explain reasioning please.?

question number one:

The expression sin2A + Cos A is equivalent to...
A) cosA (2sin A+1)
B) 2(sinA+cosA)
C) cosA (cosA+1)
D) cosA(sinA +1)

question number two:

The expression sin^2 theta + cos^2 theta all over sin theta is equivalent to....
A) csc theta
B) (sin theta) (cot theta)
C) (sin theta) (cos theta) (cot theta)
D) sec theta

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