In triangle ABC, AB=x units , AC=7 units and angle B is 90°
Evaluate:
(root of 7-x) • tan C + (root of 7+x) • cot A - 14cos A + 21 sin C + (root of 49+x^2• cos B)
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In triangle ABC, AB = x units, AC = 7 units, angle B = 90 degrees, cos B = 0 degrees. Evaluate: root 7 - x tan C + root 7 + x cot A - 14 cos A + 21 sin C + root 49 - x square cos B
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