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प्रश्न
ABC is an isosceles right-angled triangle. Assuming of AB = BC = x, find the value of each of the following trigonometric ratios: tan 45°
योग
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उत्तर
Given that AB = BC = x
∴ AC = `sqrt(AB^2+BC^2) = sqrt(x^2 + x^2) = xsqrt2`
tan 45° = `"AB"/"BC" = x/x =1`
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अध्याय 21: Trigonometrical Ratios [Sine, Consine, Tangent of an Angle and their Reciprocals] - EXERCISE 21 (C) [पृष्ठ ३२२]
