2 years ago

Find Y, write your answer in simplest radical from. Please help me out guys I need this problem.

Mathematics

1 answer:

skelet666 [1.2K]2 years ago

5 0

2sqrt3 / 2 = sqrt3
Sqrt3 • sqrt3 = 3
Hope this helps :)
It’s another 30 60 90 triangle so the sides are x xsqrt3 2x

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Use the trigonometric subtraction formula for sine to verify this identity: sin((π / 2) – x) = cos x

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Answer:

Step-by-step explanation:

$sin (\frac{\pi}{2} - x) = cos x \\\\ sin (a - b) = sin a.cos b - sin b.cos a \\\\ sin (\frac{\pi}{2} - x) = sin \frac{\pi}{2}.cos x - sin x.cos \frac{\pi}{2} \\\\ sin \frac{\pi}{2} = 1; cos \frac{\pi}{2} = 0 \\\\ sin (\frac{\pi}{2} - x) = 1.cos x - sin x.0 \\\\ sin (\frac{\pi}{2} - x) = cos x$