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Some Applications Of Trigonometry

Question

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If a cos³ θ + 3 a cos θ. sin² θ = m and a sin³ θ + 3a cos² θ.sin θ = n, then prove that
$left parenthesis straight m plus straight n right parenthesis to the power of 2 divided by 3 end exponent plus left parenthesis straight m minus straight n right parenthesis to the power of 2 divided by 3 end exponent space equals space 2 straight a to the power of 2 divided by 3 end exponent.$

Solution

Solution not provided.

Some More Questions From Some Applications of Trigonometry Chapter

In ΔABC, right angled at B. AB = 24 cm, BC = 7 cm. Determine:
(i) sin A cos A,
(ii) sin C, cos C.

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