If cos(3x)=sin(x+18°) what is the value of x

Use the identity,

This lets us write

and we can take the inverse cosine of both sides to get

where is any integer.

Solving for gives

step-by-step explanation:

step-by-step explanation:

two pairs of adjacent sides are of equal length. this implies that one diagonal divides the kite into congruent triangles, and so the angles between the two pairs of equal sides are equal in measure. it also implies that the diagonals are perpendicular.