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If a sec x – c tan x = d and b sec x + d tan x = c , then prove that a² + b² = c² + d²

If a sec x – c tan x = d and b sec x + d tan x = c , then prove that a² + b² = c² + d²

Grade:11

1 Answers

Lab Bhattacharjee
121 Points
8 years ago
HINT:
 
Solve for sec x, tan x and use  sec^2x-tan^2x=1

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