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Q6 of 45 Page 131

Prove that:
If then show that

Given,

Squaring both side,

[(a + b)² = a² + b² + 2ab]

Hence, Proved !

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Prove that:

sin⁴ θ – cos⁴ θ = 1 – 2cos² θ

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Prove that:

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Prove that:

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Prove that:

sec⁴A (1– sin⁴A) – 2tan² A = 1

Questions · 45

6. Trigonometry

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