Week 17-The sin , cos law
This week we learned about the sin law
which is :sinA/a = sinB/b = sinC/c
we can use this formula to solve the angle or the line
so we have to solve what is the AC
we already know what is the angle c is 80 degree and the c line is 5 cm , and we also know the angle b is 30 degree
so we can use this function that just use two of them
sin C/c = sin C /b
sin80 degree/5cm=sin30 degree/AC
AC=(sin30*5 )/sin80 degree
AC=2.5cm(use the calculator)
ok , and we also learn how to solve the cos line
thanks for reading