1-cos^2 A / sec^2 A - tan^2 A

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asked May 25, 2018 161k views

1 Answer

Aaditya Thakkar · Answer 1 · 2018-05-30T21:16:39+0000

I hope this helps you

✔cos^2A+sin^2A=1

✔1-cos^2A=sin^2A

✔cos2A=cos^2A-sin^2A

✔sin2A=2.sinA.cosA

secA=1/cosA

tgA=sinA/cosA

sin^2A/1/cos^2A-sin^2A/cos^2A

sin^2A.cos^2A/cos2A

2.sin^2A.cos^2A/cos2A

sin2A.2.sin2A/cos2A

tg2A.2.sin2A

1-cos^2 A / sec^2 A - tan^2 A

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