Math, asked by anshjain292004, 7 months ago

a sec Ф + b tan Ф = c then, (a tan Ф + b sec Ф)²

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Answered by Anonymous
1

EXPLAINED CLEARLY IN THE PICTURE

HOPE IT HELPS...

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Answered by Mora22
0

Answer:

(a \secФ + b \tan Ф) = c

squaring \: on \: both \: sides

 {a}^{2}  { \sec^{2}Ф } +  {b}^{2}  { \tan^{2} Ф } + 2ab \secФ \tan Ф =  {c}^{2}

 {a}^{2} (1 +  { \tan^{2} Ф}) +  {b}^{2} ( { \sec ^{2} Ф} - 1) + 2ab \tanФ \secФ =  {c}^{2}

 {a}^{2}   -   {b}^{2}  +   {a}^{2} { \tan}^{2} Ф +   {b}^{2}  { \sec}^{2} Ф + 2ab \tanФ \secФ =  {c}^{2}

(a tan Ф + b sec Ф)² =  {c}^{2}  +  {b}^{2}  -  {a}^{2}

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