Løs (frac{tan25^{circ}}{csc65^{circ}})^{2}+(frac{cot25^{circ}}{sec65^{circ}})^2+2tan18^circtan45^circtan72^circ

$$( \frac { \tan 25 ^ { \circ } } { \csc 65 ^ { \circ } } ) ^ { 2 } + ( \frac { \cot 25 ^ { \circ } } { \sec 65 ^ { \circ } } ) ^ { 2 } + 2 \tan 18 ^ { \circ } \tan 45 ^ { \circ } \tan 72 ^ { \circ }$$

Evaluer

$$\frac{45442351761115914888034412436150224210730415685514322476705801937969715985475404991335325292689}{15147450587038641294478415595498206962310364838504310844441344450000000000000000000000000000000}\approx 3$$

Løsningstrinn

Evaluate trigonometric functions in the problem

$${(\frac{0,4663076581549986}{1,1033779189624917})} ^ {2} + {(\frac{2,1445069205095586}{2,3662015831524985})} ^ {2} + 2 \cdot 0,3249196962329063 \tan(45) 3,0776835371752527$$

Utvid \frac{0,4663076581549986}{1,1033779189624917} ved å multiplisere både telleren og nevneren med 10000000000000000.

$$\left(\frac{4663076581549986}{11033779189624917}\right)^{2}+\left(\frac{2,1445069205095586}{2,3662015831524985}\right)^{2}+0,3249196962329063\times 2\times 3,0776835371752527\tan(45)$$

Forkort brøken \frac{4663076581549986}{11033779189624917} til minste felles nevner ved å dele teller og nevner på 3.

$$\left(\frac{1554358860516662}{3677926396541639}\right)^{2}+\left(\frac{2,1445069205095586}{2,3662015831524985}\right)^{2}+0,3249196962329063\times 2\times 3,0776835371752527\tan(45)$$

Regn ut \frac{1554358860516662}{3677926396541639} opphøyd i 2 og få \frac{2416031467266655914917579622244}{13527142578377765566699460806321}.

$$\frac{2416031467266655914917579622244}{13527142578377765566699460806321}+\left(\frac{2,1445069205095586}{2,3662015831524985}\right)^{2}+0,3249196962329063\times 2\times 3,0776835371752527\tan(45)$$

Utvid \frac{2,1445069205095586}{2,3662015831524985} ved å multiplisere både telleren og nevneren med 10000000000000000.

$$\frac{2416031467266655914917579622244}{13527142578377765566699460806321}+\left(\frac{21445069205095586}{23662015831524985}\right)^{2}+0,3249196962329063\times 2\times 3,0776835371752527\tan(45)$$

Regn ut \frac{21445069205095586}{23662015831524985} opphøyd i 2 og få \frac{459890993211339028795067396683396}{559890993211339027323350679250225}.

$$\frac{2416031467266655914917579622244}{13527142578377765566699460806321}+\frac{459890993211339028795067396683396}{559890993211339027323350679250225}+0,3249196962329063\times 2\times 3,0776835371752527\tan(45)$$

Legg sammen \frac{2416031467266655914917579622244}{13527142578377765566699460806321} og \frac{459890993211339028795067396683396}{559890993211339027323350679250225} for å få \frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}.

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+0,3249196962329063\times 2\times 3,0776835371752527\tan(45)$$

Multipliser 0,3249196962329063 med 2 for å få 0,6498393924658126.

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+0,6498393924658126\times 3,0776835371752527\tan(45)$$

Multipliser 0,6498393924658126 med 3,0776835371752527 for å få 1,99999999999999938244315951584402.

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+1,99999999999999938244315951584402\tan(45)$$

Få verdien av \tan(45) fra tabellen for trigonometriske verdier.

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+1,99999999999999938244315951584402\times 1$$

Multipliser 1,99999999999999938244315951584402 med 1 for å få 1,99999999999999938244315951584402.

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+1,99999999999999938244315951584402$$

Legg sammen \frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225} og 1,99999999999999938244315951584402 for å få \frac{45442351761115914888034412436150224210730415685514322476705801937969715985475404991335325292689}{15147450587038641294478415595498206962310364838504310844441344450000000000000000000000000000000}.

$$\frac{45442351761115914888034412436150224210730415685514322476705801937969715985475404991335325292689}{15147450587038641294478415595498206962310364838504310844441344450000000000000000000000000000000}$$