x in deg. and rad. in terms of sin

**Justardms** · June 21st 2005, 11:49 AM

Hi I need help with the following please?

Find X in radians, in terns of pi: sin x = 1/radical 2

Fine X in degrees, to nearest tenth: sin x = .35

THANK YOU

**MathGuru** · June 21st 2005, 03:44 PM

1. $sin x = 1/\sqrt{2}$

$x = Asin(1/\sqrt{2})$

using a calculator, i found that $Asin(1/\sqrt{2})=.785398...$

I divided this number by pi and got 1/4

so the answer is $\frac{\pi}{4}$

2. $sin x = .35$

$x = Asin(.35)$

using a calculator, i found that $Asin(.35)=20.487......$

so the answer is 20.5 degrees

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