Answer:
option 4
Step-by-step explanation:
using the sine/ cosine ratios in the right triangle and the exact values
cos30° = , sin30° = , then
cos30° = = = ( cross- multiply )
2x = 20 × = 20 × 3 = 60 ( divide both sides by 2 )
x = 30
and
sin30° = = = ( cross- multiply )
2y = 20 ( divide both sides by 2 )
y = 10
B. No, the two triangles don't have
corresponding sides marked congruent.
Answer:It's 46.2