TRIGONOMETRIC EQUATIONS Solving Equations (Page 9 of 11)

As a final example, let's solve the equation 1-sinx = sqrt(3)*cosx for 0deg <= x < 360deg, which involves two different trigonometric functions. We can use the second method and define each side of the equation as a separate function. We will continue to work in degree mode. Enter the left side of the equation as function Y1 and the right side as function Y2.

 Y= key. CLEAR key.

 1 Subtraction key. SIN key. X,T,theta,n key. Right parenthesis key. ENTER key.
 2nd Square root key. 3 Right parenthesis key. COS key. X,T,theta,n key. Right parenthesis key.

Calculator screen image.
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