Come valuti l'espressione csc (pi / 4) csc(π4)?

Risposta:

sqrt22

Spiegazione:

Using the color(blue)"trig. identity"trig. identity

color(orange)"Reminder " color(red)(|bar(ul(color(white)(a/a)color(black)(csctheta=1/sintheta)color(white)(a/a)|)))

rArrcsc(pi/4)=1/sin(pi/4)

color(orange)"Reminder " color(red)(|bar(ul(color(white)(a/a)color(black)(sin(pi/4)=1/sqrt2)color(white)(a/a)|)))

rArrcsc(pi/4)=1/sin(pi/4)=(1)/(1/sqrt2)=sqrt2

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