1° e quals pi /180 radian s, and 1 radian equals 180/pi degrees
sin A = B'C' / AB'
With this notation, s in A = a/c, and sin B = b/c
cos t = sin (90° – t)
cos t = sin (pi/2 – t)
a2 + b2 = c2
sin (90 o - A) = sin C = c / b = cos A
It has three sides
* A, length A, opposite angl e a at vertex a
* B, length B, opposite angle b a
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19equals pi/180 radians, and 1 radian equa 16
sin A = B'C' / AB'
With this not 13 12 11= sin (90° – t)
cos t = sin (pi/2 – 9t)
a2 + b82 = c2
sin (90o 4sin C = c 11
