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if tanα + secα = x , prove that the value of tanα is x 2 - 1 / 2x …. .. … ..

if  tanα + secα = x , prove that the value of tanα  is x2- 1 / 2x …. ..  … ..

Grade:10

1 Answers

Arun
25750 Points
4 years ago
 tanα + secα = x
hence  secα  – tanα = 1/x
 
hence now subtract the equations,
 
2  tanα = x – 1/x
 tanα = (x2 - 1)/2x

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