Finding the solution

  • #1
This problem seems really easy but I don't know how to solve it. Can someone please help me?

Give the solution in radians which is in the second quadrant for the equation
4 sin(x) = 1.8
 

Answers and Replies

  • #2
Gib Z
Homework Helper
3,346
5
[tex]4\sin x =1.8[/tex]

[tex]\sin x = \frac{9}{20}[/tex]

[tex]x = \arcsin(\frac{9}{20})[/tex]

That answer will give you the solution in the first quadrant.

Use the fact [tex]\sin (\pi - x) = \sin x[/tex] to finish off.
 

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