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Evaluate 1-2cos²25/(1-2sin²65)
Evaluate 1-2cos²25/1-2sin²65
If sin∅=3/5 and ∅ is acute find sin½∅
A man on the fifth floor of a building shouts down to a person on the street. If the angle of elevation from the street to the man in the building is 35° and the man in the building is 40 feet up, about how far away from the building is the person on the street?
Given that sine theta sinθ= 13/85 and cosine theta <​0, determine the values of the sine and cosine functions for 2thetaθ.
13. If A =600 , B=450 and C=300, Prove that
tan2A + 4cos2B +3 sec3C=9 where, 600 is 60 degree,450 is 45 deg 300 is 30 deg and tan 2 is tan square cos2 and sec 3 is all square and cube
Evaluate sin(tan-1 0). http://prntscr.com/n65cyp
Evaluate arccsc sqrt(2), {pi/6,5pi/6}, {pi/3+-2pi*n,5pi/3+-2pi*n}, pi/3, {pi/4+-2pi*n, 3pi/4+-2pi*n} http://prntscr.com/n65cs6
http://prntscr.com/n65co0
The range of y=Arccos x is (-pi/2, pi/2). True or False? http://prntscr.com/n65cit
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