Page 2 of 16
Solve the triangle △ABC.
A = ?
C = 32°
B = 81°
a = ?
b = 13
c = ?
32° + 81° + A = 180°
113° + A = 180
A = 67° ✓
13 / sin (81) = c / sin (32)
13 sin (32) / sin (81) = c
6.888950435 / .9876883406 = c
6.9748 = c ✓
a / sin (67) = 13 / sin (81)
a = 13 sin (67) / sin (81)
a = 12.1157 ✓
A = 67°
C = 32°
B = 81°
a = 12.1157
b = 13
c = 6.9748 ✓
Solve the triangle △ABC.
A = 90°
B = 25°
C = ?°
a = 8
b = ?
c = ?
90° + 25° + C = 180°
115° + C = 180°
C = 65° ✓
a / sin (A) = b / sin (B)
8 / sin (90) = b / sin (25)
8 * sin (25) / sin (90) = b
3.380946094 / 1 = b
3.3809 = b ✓
b / sin (B) = c / sin (C)
3.3809 / sin (25) = c / sin (65)
3.3809 * sin (65) / sin (25) = c
7.2505 = c ✓
A = 90°
B = 25°
C = 65°
a = 8
b = 3.3809
c = 7.2505 ✓
Creative Commons image courtesy of Flickr user DeWaine Tollefsrud
Recent Comments