Length AB is 6 cm, length BG is 3 cm and length FG is 2 cm. The length of the diagonal AF is 7 cm. The plane ABCD is the base of the cuboid. The line FC and the plane ...
Being able to identify which formula to use, sine or cosine, and when, is necessary to answer questions on this topic successfully. Check you are confident in how to use the sine and cosine rules.