Mathematics, 29.11.2021 08:30, arifkarimi9214

The angle \theta_1θ 1 theta, start subscript, 1, end subscript is located in Quadrant \text{IV}IVstart text, I, V, end text, and \sin(\theta_1)=-\dfrac{10}{13}sin(θ 1 )=− 13 10 sine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis, equals, minus, start fraction, 10, divided by, 13, end fraction . What is the value of \cos(\theta_1)cos(θ 1 )cosine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis? Express your answer exactly. \cos(\theta_1)=cos(θ 1 )=cosine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis, equals

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The angle \theta_1θ 1 theta, start subscript, 1, end subscript is located in Quadrant \text{IV}IVst...