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Some Applications Of Trigonometry

Question

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Without using trigonometric tables, evaluate the following:
$fraction numerator sin space 18 degree over denominator cos space 72 degree end fraction plus square root of 3 left square bracket tan space 10 degree space. space tan space 30 degree. space tan space 40 degree. space tan space 50 degree. space tan space 80 degree right square bracket$

Solution

Solution not provided.
Ans. 2

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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