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Prove the following identities: 1.) 2Cos^2θ - 1 = 1 - 2Cos^2θ 2.) (Sin A...

Prove the following identities:
1.) 2Cos^2θ - 1 = 1 - 2Cos^2θ
2.) (Sin A + Cos A)^2 = 1 + 2 Sin^2θ Cosθ
3.) Sin θ Cos θ = (Cot θ / 1 + Cos^2 θ)
4.) (1 - Cot^2θ / 1 + Cot^2θ) = 1 - 2Cos^2θ
5.) (Cot A / Cosec A -1) - (Cos A / 1 + Sin A)?

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts