C2

Angle                                                            Length

Use when you have

- 2 angles and opposite side

- 2 sides and opposite angle

Angle:                                           Length

- 2 sides and enclosed angle

- 3 sides

Log_an=x

a^x=n

log_axy=log_ax+log_ay

log_a(x/y)=log_ax-log_ay

log_a(x)^k=klog_ax

log_a(1/x)=-log_ax

To change the base:

Log_ax=log_bx/log_ba

Log_ab=1/log_ba