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07-04-2020
Mathematics

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It's precalc!!! The Pythagorean identity. Value of sin(θ1)?

Its precalc The Pythagorean identity Value of sinθ1 class=

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amna04352 amna04352

07-04-2020

Answer:

sqrt(217)/19

Step-by-step explanation:

sin²(theta) = 1 - cos²(theta)

= 1 - (-12/19)²

sin²(theta) = 217/361

sine is positive in quadrant 2

Take the positive root

sin(theta) = sqrt(217)/19

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