Answer:
Option (3)
Step-by-step explanation:
In a right triangle,
Cosine rule →
Sine rule → 
In the given triangle,
By cosine rule,


Or cos(h°) = z ÷ x
Therefore, Option (3) will be the answer.
What? ......
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A heptagon has 7 sides so it would be a pentagon (which has 5 sides)
Answer:
where are the others
Step-by-step explanation:
is there supposed to be other numbers?