Statistics for Trigonometric functions

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Hint	Answer	% Correct
What is1/cosecx	sinx	100%
What is 1/cotx	tanx	100%
What is 1/sinx	cosecx	93%
What is 1/secx	cosx	93%
What is 1/ tanx	cotx	93%
What is 1/cosx	secx	93%
What is cosx/sinx?	cotx	86%
What is sinx/cosx?	tanx	79%
What is f'(x) of sinx?	cosx	64%
What is f'(x) of cosx?	- sinx	64%
What is the half angle formula of sin2 x?	(1 - cos2x)/2	36%
What is f'(x) of tanx?	sec2 x	36%
What is the pythagorean identity for sin and cos?	sin2x + cos2x = 1	36%
For cos2 x?	(1 + cos2x)/2	29%
And for cosec and cot?	1 + cot2 x = cosec2 x	21%
For tan and sec?	1 + tan2 x = sec2 x	21%
What is f'(x) of cotx?	- cosec2 x	14%
What is f'(x) of cosecx?	- cosecxcotx	14%
What is f'(x) of secx?	secxtanx	14%
And for tan2 x?	(1 - cos2x)/(1 + cos2x)	0%