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# ​ Which expression represents θ in terms of x?

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Which expression represents θ in terms of x? Feb 24, 2018

### Best Answer

#1
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When you use the sin function, you 'undo' it when you use the sin inverse (also called the arcsin) function     so   if you start with theta

then you use the sine function ,  sin (theta)     then    arcsin ( sin theta) = theta

Your equation:   sin(theta) = x/10      now    arcsin both sides

arcsin(sin (theta))  = arcsin  (x/10)

theta = arcsin (x/10)

Feb 24, 2018
edited by Guest  Feb 24, 2018

### 1+0 Answers

#1
+2
Best Answer

When you use the sin function, you 'undo' it when you use the sin inverse (also called the arcsin) function     so   if you start with theta

then you use the sine function ,  sin (theta)     then    arcsin ( sin theta) = theta

Your equation:   sin(theta) = x/10      now    arcsin both sides

arcsin(sin (theta))  = arcsin  (x/10)

theta = arcsin (x/10)

ElectricPavlov Feb 24, 2018
edited by Guest  Feb 24, 2018