SOLUTION: Evaluate: tan^2 (-405�) - sec^2 (-405�) + cos 900� Thank you

SOLUTION: Evaluate: tan^2 (-405�) - sec^2 (-405�) + cos 900� Thank you

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Question 967036: Evaluate: tan^2 (-405�) - sec^2 (-405�) + cos 900�
Thank you
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
� =?
�
�
since and we have

since =>

so,
then, your answer is:

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