6. Calcule os valores das funções trigonométricas:

a) sen x = -1
b) cos x = √3
2
c) tg x = √3
3

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

5(-9w) put expression in distributive property

Find the value of x for which the lines are parallel.