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Prove: (secA+tanA-1)(secA-tanA+1)=2tanA...

Prove: `(secA+tanA-1)(secA-tanA+1)=2tanA`

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RD SHARMA-TRIGONOMETRIC IDENTITIES-All Questions
  1. Prove the following identity: (1/(sec^2theta-cos^2theta)+1/(cos e c^2t...

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  2. Prove: ((1+sintheta-costheta)/(1+sintheta+costheta))^2=(1-costheta)/(1...

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  3. Prove: (secA+tanA-1)(secA-tanA+1)=2tanA

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  4. Prove: (1+cotA-cos e c\ A)(1+tanA+secA)=2

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  5. Prove: (cos e c\ theta-sectheta)(cottheta-tantheta)=(cos e c\ theta+se...

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  6. Prove: (secA-cos e c\ A)(1+tanA+cotA)=tanAsecA-cotA cos e c\ A .

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  7. (cosAcosecA-sinAsecA)/(cosA+sinA)=cosecA-secA

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  8. Prove: (sinA)/(secA+tanA-1)+(cosA)/(cos e c\ A+cotA-1)=1

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  9. Prove: (tanA)/((1+tan^2A)^2)+(cotA)/((1+cot^2A)^2)=sinAcosA

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  10. Prove: sec^4A(1-sin^4A)-2tan^2A=1

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  11. Prove: (cot^2A(secA-1))/(1+sinA)=sec^2A((1-sinA)/(1+secA))

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  12. Prove: sin^2Acos^2B-cos^2Asin^2B=sin^2A-sin^2B

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  13. Prove: (cotA+tanB)/(cotB+tanA)=cotAtanB

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  14. Prove: (tanA+tanB)/(cotA+cotB)=tanAtanB

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  15. Prove: cot^2A cos e c^2B-cot^2B cos e c^2A=cot^2A-cot^2B .

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  16. Prove: tan^2Asec^2B-sec^2Atan^2B=tan^2A-tan^2B

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  17. If 3sintheta+5costheta=5 , show that 5sintheta-3costheta=+-3

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  18. If cos e c\ theta+cottheta=m and cos e c\ theta-cottheta=n , prove ...

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  19. If cosA+cos^2A=1, find the value of sin^2A+sin^4A.

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  20. Prove that: sqrt((sectheta-1)/(sectheta+1))+sqrt((sectheta+1)/(secthet...

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