An arc of length 8 in. is intersected by a central angle in a circle with a radius of 3 in. What is the measure of the angle? Ro
2 answers:
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Answer:
<D + <F =
Step-by-step explanation:
Given: <D + <E =
<E + <F =
But, the sum of angles in a triangle = .
Thus;
<D + <E + <F =
+ <F =
⇒ <F = -
=
<F =
Also,
<E + <F =
<E + =
<E = -
=
<E =
So that;
<D + <E =
<D + =
<D = -
=
<D =
⇒ <D = , <E =
, and <F =
.
Therefore;
<D + <F = +
=