NECESITO AYUDA EN ESTE PROBLEMA DE DERIVADAS(ver foto)?

Tenemos como dato la ecuación de la altura en relación con el desplazamiento horizontal

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<img src="https://tex.z-dn.net/?f=%5Cboxed%7Bx%3D%5Cdfrac%7BV_0%5E2%5Csin%5Ctheta_0%5Ccdot%20%5Ccos%20%5Ctheta_0%7D%7Bg%7D%7D%5C%5C%5C%5C%20%5C%5C%5Ctext%7BReemplazamos%20este%20valor%20en%20la%20ecuaci%5C%27on%20inicial%3A%7D%5C%5C%5C%5C%5C%5Ch%3D%28%5Ctan%20%5Ctheta_0%29%20%5Cleft%28%5Cdfrac%7BV_0%5E2%5Csin%5Ctheta_0%5Ccdot%20%5Ccos%20%5Ctheta_0%7D%7Bg%7D%5Cright%29-%5Cleft%28%5Cdfrac%7Bg%7D%7B2V_0%5E2%5Ccos%5E2%5Ctheta_0%7D%5Cright%29%5Cleft%28%5Cdfrac%7BV_0%5E2%5Csin%5Ctheta_0%5Ccdot%20%5Ccos%20%5Ctheta_0%7D%7Bg%7D%5Cright%29%5E2%5C%5C%5C%5C%5C%5Ch%3D%5Cdfrac%7BV_0%5E2%5Csin%5E2%5Ctheta_0%7D%7Bg%7D-%5Cdfrac%7BV_0%5E2%5Csin%5E2%5Ctheta_0%7D%7B2g%7D%5C%5C%5C%5C%5C%5C%5Cboxed%7B%5Cboxed%7Bh%3D%5Cdfrac%7BV_0%5E2%5Csin%5E2%5Ctheta_0%7D%7B2g%7D%7D%7D" />.