Writing the Trigonometric Function sec(arctan(4x)) as an Algebraic Expression

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Writing the Trigonometric Function sec(arctan(4x)) as an Algebraic Expression. We draw a triangle and write this in algebraic form.
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if you had something saying cos(arcsin(2x) − arctan(5x)), and to write that as an algebraic expression, how would you do that? (thanks for the help)

vikramkarmarkar
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This is helping me prepare for my final thank you!!

Emmiiillyyy
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Ndinqwenela ukubulela . Oku kuluncedo kakhulu ukuqonda wam kwimathematika ekumgangatho ophezulu . Mna indoda abamvelaphi yabo iseAfrika kwaye ungathanda ukuphucula ngokwam ngeendlela imfundo kwaye baye banceda ngempumelelo . Enkosi Umkhafuli of Math !!!

schoolaccount
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Closest I can get to Khan Academy. Thanks man.

johnpage
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This was quite helpful, thank you!!!!

lourdes
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The popup that appears in the video towards the end of the video interferes with the recap, which I found frustrating/annoying.

iguana
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Thank you so much! <3
Liked and subbed!

clairthebona