Math, asked by junaid456, 1 year ago

SecA(1-sinA) (secA + tanA) =1​

Answers

Answered by Anonymous
0

Answer:

Step-by-step explanation:

               SecA(1-SinA).(SecA+TanA)=1

LHS

      1/CosA(1-SinA) . (1/CosA+SinA/CosA)....  [Sec=1/Cos and Tan=Sin/Cos]

     

      (1-SinA/Cos A) . (1+SinA/CosA)

      (1-SinA)(1+SinA)/Cos²A  

   

      1²-Sin²A/Cos²A.........   [(a+b).(a-b)=a²-b²]

      1-Sin²A/Cos²A

      Cos²A/Cos²A.....   [sin²A+cos²A=1⇒cos²A=1-sin²A]

 

           =  1

     Hence, PROVED

      LHS=RHS

     

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