Verify that the equation is an identity. 2. tan 100- tan 100 tan 50= 2 tan 50 Which of the following statements verifies that the equation is an identity? O A. tan 100- tan 100 tan 50 = 4 tan (50/2) =2 tan 50 %3D 2 1- tan (50/2) O B. tan 100- tan 100 tan 50 = 2 tan 50 2 (1- tan250) =2 tan 50 1 tan 50 C. tan 100 – tan 100 tan 50 = 4 tan 50 -2 tan 50 = 2 tan 50 OD. sin 100 sin 100 2, tan 100 - tan 100 tan50 = tan 50 = 2 tan 50 cos 100 cos 100

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.