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nexus9112 [7]
2 years ago
10

Find BC to the nearest tenth. will give brainilist

Mathematics
1 answer:
horsena [70]2 years ago
4 0

Answer:

BC = 20.7

Explanation:

  • Formula used: a² = b² + c² - 2bc*cos(A)

<u>Using the formula</u>:  BC² = 15² + 13² - 2*15*13*cos(95)

                                BC² = 427.991

                                BC = √427.991

                                BC = 20.7 units

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The error in the distance if the uppermost portion of a 3. 0m long stadia rod is inclined 14 cm toward the observer and the rod intercept is 1. 75m on a horizontal sight is 8.167cm.

<h3>What is Tangent (Tanθ)?</h3>

The tangent or tanθ in a right angle triangle is the ratio of its perpendicular to its base. it is given as,

Tan(θ) = Perpendicular/Base

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θ is the angle,

Perpendicular is the side of the triangle opposite to the angle θ,

The base is the adjacent smaller side of the angle θ.

Given the uppermost portion of a that is 3.0m long stadia rod is inclined 14 cm toward the observer, therefore, the angle of inclination, θ can be written as

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Learn more about Tangent (Tanθ):

brainly.com/question/10623976

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