Please Hurry this is really important thank you

What could explain what happened when the time was equal to 120 minutes

Si la base de un triángulo isósceles mide 70 m y el ángulo opuesto a ésta mide 58°; entonces ¿cuánto mide la altura de dicho triángulo? a) 21.87 m. b) 40.01 m. c) 43.74 m. d) 63.14 m.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.