Write 12sinθ + 5cosθ as a single cosine with a phase displacement.

Agiven line has the equation 2x + 12y = −1. what is the equation, in slope-intercept form, of the line that is perpendicular to the given line and passes through the point (0, 9)? y = ( )x + 9

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

The sum of a number and 5 times the number is 18.find the number