An angle measures 84º more than the measure of its supplementary angle, What is the measure of each angle?

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

What is the standard form of -5x^2+2x^4-11+x^3+3x

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).