lrnegrita8 lrnegrita8

02-05-2018
Mathematics

contestada

Help Geometry!!
AC is tangent to circle O at A. If , m<BY= 24 , what is m<YAC?

a) 48

b) 156

c) 78

d) 132

Help Geometry AC is tangent to circle O at A If mltBY 24 what is mltYAC a 48 b 156 c 78 d 132 class=

Respuesta :

calculista calculista

12-05-2018

we know that
The inscribed angle measures half of the arc it comprises.
so
∡BAY=BY/2------> 24/2------> 12°

angles YAC and BAY are complementary angles
∡YAC+∡BAY=90°
∡YAC=90-∡BAY-------> ∡YAC=90-12-----> 78°

the answer is
78°

Answer Link

Otras preguntas

Explain, in terms of valence electrons, why the bonding in magnesium oxide, MgO, is similar to the bonding in barium chloride, BaCl2.

0.278. what is his batting average rounded to the nearest hundredth

An ugly Christmas sweater is on sale for $37.20. If the store was having a 20% sale, what is the original price of the ugly Christmas sweater? Possible answers:

When did worshiping of ancient Greek gods come to an end?

what are van der waal forces in detail?

_____ allow(s) you to think ahead about what you'd do in future situations. Foresight Decisions Peer pressure Influence

Do humans perceive temperature or heat-flux? (or both?)

Which of the following is an example of an exploitation colony? A. India B. Australia C. Great Britain D. the United States

Given the sequence 8, 16, 32, 64, ..., which expression would give the thirteenth term?

A solid substance was tested in the laboratory. The test results are listed below. • dissolves in water • is an electrolyte • melts at a high temperature Based