Use trigonometric identities and algebra to find exact solutions. tan(x + π) - cos(x + π/2)=0

Give all solutions on the interval [0,2π]

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In the football stadium, there are 18 empty seats out of 360 total seats. (1a) write the ratio of empty seats to total seats as a fraction in simplest form. (1b) then explain its meaning.

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Which expression is equivalent to sq-80