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Find an expression equivalent to... |dw:1358280084977:dw|

I am not sure. The answer choice are...
A. sec^2 theta
B. cot theta
C. tan^2 theta
D. cos^2 theta

|dw:1358280261643:dw|

|dw:1358280353086:dw|

Yes I can see. Thanks for writing out the equations. So the answer would be A. sec^2 theta?

|dw:1358280516292:dw|

So can you help with another one?

YEs. Post a new question

Simplify|dw:1358281039137:dw|

Tan^2theta + 1 = sec^2theta
This is very useful to remember.

I'll answer that one quickly before I finish your first problem.

|dw:1358281166638:dw|

Another good rule to remember. So, yes your answer is correct.

|dw:1358281344118:dw|

|dw:1358281440642:dw|

Oh ok, Do you know how to do this one....
Solve \[4\sin ^{2}x+4\sqrt{2}cosx-6=0\]

Post this one as a new question up top and close this question.

ok