If two tangents are inclined at an angle of 90° are drawn to circle of radius 4cm, then length of each tangent is equal to (a) 3v3 cm (b) 4cm (c) 6cm (d) 3 13/4cm
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we use trigonometry to find the length.
Tan 30° = 3 cm/Tangent
Tangent = 3 √3 cm as tan 30° = 1/√3
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