A scuba diver is 33 feet below sea level, while a hiker is 64 feet above sea level directly overhead on the cliffs overlooking t
2 answers:
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Answer: We can arrange the steps with help of below explanation.
Step-by-step explanation:
Here ABC is a triangle,
Draw a perpendicular from BD to side AC ( construction)
where
In the right triangle BCD, from the definition of cosine:
cos C =CD/ BC
CD= a cos C
Subtracting this from the side b, we see that
DA= b-acos C
In the triangle BCD, from the definition of sine:
sin C =BD / a
BD = a sin C
In the triangle ADB, applying the Pythagorean Theorem
Substituting for BD and DA from (2) and (3)
⇒ ( On simplification)
⇒
⇒
⇒ (because,
)
Answer:
Step-by-step explanation:
step 1
Find the radius of the circle
we know that
A circumference of the circle subtends a central angle of 360 degrees
so
using proportion
step 2
Find the area of sector
we know that
The area of the circle subtends a central angle of 360 degrees
so using proportion
Let
x ----> the area of the sector