Question

find the value of sin(13π/2)
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Answer 1

Answer:

value of sin(13π/2) is 1

Answer 2

Answer:

$\huge\underline{\rm\red{Reticent_Bliss}}$

Explanation:

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• $sin( \frac{13\pi}{2} )$
• $sin( \frac{12\pi}{2} ) + ( \frac{\pi}{2} ) \\ \\ sin(6\pi + \frac{\pi}{2}) \\ \\ sin(6\pi) = sin(2\pi) = sin(0)$

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Use formula

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$sin(a + b) = sin \: a \: \: cos \:b \: + \: cos \: a \: \: sin \: b \\ sin \: 0 \: \: cos \: (\frac{\pi}{2} ) + cos \: 0 \: \: sin \: (\frac{\pi}{2} ) = 0 + 1 = > 1$

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$sin( \frac{13\pi}{2} )$ = 1

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$\huge\underline{\rm\red{Reticent_Bliss}}$