What does $sin(arctan(6))-4sin(arcsec(5))$ equal?

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Answer 1 · 2016-07-18T20:07:30

$sin(arctan(6))-4sin(arcsec(5))$

$=sin(cot^-1(1/6))-4sin(cos^-1(1/5))$

$=sin(csc^-1sqrt(1+1/6^2))-4sin(sin^-1sqrt(1-1/5^2))$

$=sinsin^-1(6/sqrt37)-4sinsin^-1(sqrt24/5)$

$=6/sqrt37-(8sqrt6)/5$

What does sin(arctan(6))-4sin(arcsec(5))sin(arctan(6))-4sin(arcsec(5)) equal?