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

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

វាយតម្លៃ

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

ជំហានចម្លើយ

Evaluate trigonometric functions in the problem

$${(\frac{0.4663076581549986}{1.1033779189624917})} ^ {2} + {(\frac{2.1445069205095586}{2.3662015831524985})} ^ {2} + 2 \cdot 0.3249196962329063 \tan(45) 3.0776835371752527$$

ពង្រីក \frac{0.4663076581549986}{1.1033779189624917} ដោយគុណទាំងភាគបែង និងភាគយកជាមួយនឹង 10000000000000000។

$$\left(\frac{4663076581549986}{11033779189624917}\right)^{2}+\left(\frac{2.1445069205095586}{2.3662015831524985}\right)^{2}+0.3249196962329063\times 2\times 3.0776835371752527\tan(45)$$

កាត់បន្ថយប្រភាគ \frac{4663076581549986}{11033779189624917} ទៅតួដែលតូចបំផុតដោយ​ដក និងលុបចេញ 3។

$$\left(\frac{1554358860516662}{3677926396541639}\right)^{2}+\left(\frac{2.1445069205095586}{2.3662015831524985}\right)^{2}+0.3249196962329063\times 2\times 3.0776835371752527\tan(45)$$

គណនាស្វ័យគុណ \frac{1554358860516662}{3677926396541639} នៃ 2 ហើយបាន \frac{2416031467266655914917579622244}{13527142578377765566699460806321}។

$$\frac{2416031467266655914917579622244}{13527142578377765566699460806321}+\left(\frac{2.1445069205095586}{2.3662015831524985}\right)^{2}+0.3249196962329063\times 2\times 3.0776835371752527\tan(45)$$

ពង្រីក \frac{2.1445069205095586}{2.3662015831524985} ដោយគុណទាំងភាគបែង និងភាគយកជាមួយនឹង 10000000000000000។

$$\frac{2416031467266655914917579622244}{13527142578377765566699460806321}+\left(\frac{21445069205095586}{23662015831524985}\right)^{2}+0.3249196962329063\times 2\times 3.0776835371752527\tan(45)$$

គណនាស្វ័យគុណ \frac{21445069205095586}{23662015831524985} នៃ 2 ហើយបាន \frac{459890993211339028795067396683396}{559890993211339027323350679250225}។

$$\frac{2416031467266655914917579622244}{13527142578377765566699460806321}+\frac{459890993211339028795067396683396}{559890993211339027323350679250225}+0.3249196962329063\times 2\times 3.0776835371752527\tan(45)$$

បូក \frac{2416031467266655914917579622244}{13527142578377765566699460806321} និង \frac{459890993211339028795067396683396}{559890993211339027323350679250225} ដើម្បីបាន \frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}។

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+0.3249196962329063\times 2\times 3.0776835371752527\tan(45)$$

គុណ 0.3249196962329063 និង 2 ដើម្បីបាន 0.6498393924658126។

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+0.6498393924658126\times 3.0776835371752527\tan(45)$$

គុណ 0.6498393924658126 និង 3.0776835371752527 ដើម្បីបាន 1.99999999999999938244315951584402។

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+1.99999999999999938244315951584402\tan(45)$$

ទទួល​យក​តម្លៃរបស់ \tan(45) ពី​តារាង​តម្លៃ​ត្រីកោណមាត្រសាស្ត្រ។

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+1.99999999999999938244315951584402\times 1$$

គុណ 1.99999999999999938244315951584402 និង 1 ដើម្បីបាន 1.99999999999999938244315951584402។

$$\frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225}+1.99999999999999938244315951584402$$

បូក \frac{7573725293519320826744653583305434733489071583881254791964551016}{7573725293519320647239207797749103481155182419252155422220672225} និង 1.99999999999999938244315951584402 ដើម្បីបាន \frac{45442351761115914888034412436150224210730415685514322476705801937969715985475404991335325292689}{15147450587038641294478415595498206962310364838504310844441344450000000000000000000000000000000}។

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