180-60=120
60 is from the complementary angle
Answer:
a = - 13
Step-by-step explanation:
Giv en
- 7 + = - 11 ( add 7 to both sides )
= - 4
Multiply both sides by a
52 = - 4a ( divide both sides by - 4 )
a = - 13
Answer:
BC ≈ 4.85 m
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos26° = = = ( cross- multiply )
5.4 × cos26° = BC , then
BC ≈ 4.85 m ( to 3 s f )