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Mathematics, 30.09.2019 12:30 qiuedhg

Find the exact values of sin(2θ), cos(2θ), and tan(2θ) given sec(θ) = − 15/9 and θ is in the interval [pi/2, pi]

i have cos(2theta) which is -7/25 but i miscalculated the other values.

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Find the exact values of sin(2θ), cos(2θ), and tan(2θ) given sec(θ) = − 15/9 and θ is in the interva...
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