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dusya [7]
1 year ago
8

Evaluate the expression under the given conditions. cos(2); sin() = − 3 5 , in quadrant iii

Mathematics
1 answer:
marta [7]1 year ago
8 0

The value of a particular trigonometric expression that is cos 2θ under the third quadrant is -119/169

Given:

sin θ = -⁵/₁₃

This can be seen from the trigonometric identity.

cos 2θ = 1 - 2sin²θ

From trigonometric identities, we know that;

cos 2θ = 1 - 2sin²θ

Thus;

cos 2θ = 1 - 2(-⁵/₁₃)²

cos 2θ = 1 - 2(25/169)

cos 2θ = 119/169

since cos θ is negative in the third quadrant, then we have;

cos 2θ = -119/169

so; cos θ is negative in the third quadrant, so ;

cos 2θ = -119/169

For more information about trigonometric ratio visit brainly.com/question/13276558

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11/55 * 100

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I need help on this question
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Answer:

11. Volume = 2181.2mm^3

12. Surface Area = 1204.49mm^2

Step-by-step explanation:

We first need to find the hypotenuse side of the triangle using the Pythagorean theorem:

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Now we can find the volume using the formula:

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To find the surface area using the surface area formula:

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For parties of six or more, a restaurant adds a 20% gratuity (or tip). Ifa
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Step-by-step explanation:

Vamos simplificar passo a passo.

k2-6k4-(3k4+k2+2)

Distribua o sinal negativo:

=k2-6k4+-1(3k4+k2+2)

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=k2+-6k4+-3k4+-k2+-2

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=-9k4-2

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