3 years ago

Help on math? :)

1 answer:

7 0

1. Let O be the center of the sphere, A the tangency point and B the location of the satellite. (as in the figure below)

2. Join B to O. M(ABO)= $\frac{1}{2}$ m(B)=(1/2)*138°=69°.

3. m(OAB)=90° as a radius to a tangency point is perpendicular to the tangent at that point.

4. m(AOB)=180°-90°-69°=21°.

5. check picture 2. Arc AM is equal to the measure of the central angle AOM = 21°.

6. The measure of the intercepted arc is 21°*2=42°

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