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Some Applications Of Trigonometry

Question

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If tan A = cot B, prove that A + B = 90°.

Solution

We have,
tan A = cot B ⇒ cot (90° - A) = cot B
⇒90° - A = B
⇒90° = A + B or A + B = 90°

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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