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Use your calculator to find the values of each of the trigonometric functions in problems 5 to 16. Round answers to four decimal places.

tan A ≈ 4.9376, quad cos A ≈ 0.9998

a) sin A ≈ 0.0112, quad cot A ≈ 0.2022

b) sin A ≈ 0.0112, quad cot A ≈ 0.2025

c) sin A ≈ 0.9998, quad cot A ≈ 0.2022

d) sin A ≈ 0.9998, quad cot A ≈ 0.2025

User Keryruo
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1 Answer

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Final answer:

The student's trigonometry problem involves finding sin A and cot A with given tan A and cos A. The sin value presented points to an error as sin A cannot exceed 1. Cot A seems to be correctly calculated as the reciprocal of tan A.

Step-by-step explanation:

The student is working on problems involving trigonometric functions and needs to determine the correct values for sin A and cot A using a given tan A and cos A. From the given information, tan A ≈ 4.9376 and cos A ≈ 0.9998, we can derive the missing trigonometric functions.

Since tan A is sin A over cos A, we can calculate sin A as tan A times cos A, which gives us sin A ≈ 4.9376 * 0.9998. However, this product is greater than 1, which is not possible for the sine of an angle in a right triangle.

Therefore, there must have been an error in the calculation or the given information. Likewise, cot A, which is the reciprocal of tan A, should be roughly 0.2025 (1 divided by 4.9376).

Given the error with sin A calculation, the correct answer must have sin A less than 1. Considering the Law of Sines and the Law of Cosines can be helpful in resolving problems where the sides and angles of triangles are involved, providing different methods to find missing measurements in triangles.

However, it seems we have a discrepancy in the values given for sin A.

User Diarmid Roberts
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