The sum identity for sine is sin(a + B) = sin(a) cos (B) + cos(a) sin(ß). By writing the angle 75 %3D as the sum 30° + 45° , use the sum identity for sine to find the exact value of sin75°. You will need the sines and cosines of 30° and 45° in this problem. Do not use a calculator. dentiies

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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.