Trig identities to know

[Shane41]

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Are these three enough for the real DAT?

1+cot^2(x)=csc^2(x)
Sin^2(x) + Cos^2(x)=1
tan^2(x)+1=sec^2(x)

 

[jkh1886]

Are these three enough for the real DAT?

1+cot^2(x)=csc^2(x)
Sin^2(x) + Cos^2(x)=1
tan^2(x)+1=sec^2(x)

all I used were:

sin=o/h
cos=a/h
tan=o/a
+inv
+arcsin, etc