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Plzz answer q.no.4....I am confused...sir plzz help me out

Plzz answer q.no.4....I am confused...sir plzz help me out

Question Image
Grade:11

1 Answers

Arun
25763 Points
2 years ago
Solve for sec x, tan x and use  sec^2x-tan^2x=1
 
You will get
 
a² + b² = c² + d² 
 
Hence option C is correct.

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