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Given, a right angled Delta ABC, whose b...

Given, a right angled `Delta ABC`, whose base is 6 and perpendicular height is 8. Find the trigonometric ratios of sin A, cos A and tan A, respectively.

A

`(4)/(5), (3)/(5), (4)/(3)`

B

`(2)/(5), (3)/(5), (4)/(5)`

C

`(4)/(5), (1)/(5), (2)/(3)`

D

None of these

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The correct Answer is:
To find the trigonometric ratios of sin A, cos A, and tan A for the right-angled triangle ABC with a base of 6 and a height of 8, we can follow these steps: ### Step 1: Identify the sides of the triangle In triangle ABC: - The base (adjacent side to angle A) = 6 - The height (opposite side to angle A) = 8 ### Step 2: Calculate the hypotenuse using the Pythagorean theorem The hypotenuse (AC) can be calculated using the Pythagorean theorem: \[ AC^2 = AB^2 + BC^2 \] Substituting the values: \[ AC^2 = 6^2 + 8^2 = 36 + 64 = 100 \] Taking the square root: \[ AC = \sqrt{100} = 10 \] ### Step 3: Calculate sin A The sine of angle A is given by the ratio of the length of the opposite side to the hypotenuse: \[ \sin A = \frac{\text{Opposite}}{\text{Hypotenuse}} = \frac{BC}{AC} = \frac{8}{10} = \frac{4}{5} \] ### Step 4: Calculate cos A The cosine of angle A is given by the ratio of the length of the adjacent side to the hypotenuse: \[ \cos A = \frac{\text{Adjacent}}{\text{Hypotenuse}} = \frac{AB}{AC} = \frac{6}{10} = \frac{3}{5} \] ### Step 5: Calculate tan A The tangent of angle A is given by the ratio of the length of the opposite side to the adjacent side: \[ \tan A = \frac{\text{Opposite}}{\text{Adjacent}} = \frac{BC}{AB} = \frac{8}{6} = \frac{4}{3} \] ### Final Results Thus, the trigonometric ratios are: - \(\sin A = \frac{4}{5}\) - \(\cos A = \frac{3}{5}\) - \(\tan A = \frac{4}{3}\) ---
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