In A ABC, LA = 850, c = 10 cm, and b = 15 cm. A possible height of A ABC is a) 10.0 cm c) 13.8 cm b) 8.6 cm d) 12.5 cm The exact value of cos (- 420) is V3 a) NO | - c) 2 V3 b) d) 1 N Using the definitions sin 0 = -, cos 0 = and tan 0 = , the simplified form of the sin 0 + cos2 0 expression is cos 0 sin 0 a) 2 18 b) c) d) x The simplified form of the expression sin x sin x is (1 - sin x) (1 + sin x) sin x a c) tan x COS X sin x b) sin x d) 1 + sin x sin x