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

(3x^2 + 2x -2) + ( -2x^2 + 5x+5) My answer 5x^2 + 7× +7 Am i right

Two taps A and B fill a swimming pool together in two hours. Alone, it takes tap A three hours less than B to fill the same pool. How many hours does it take ea

Do all your pet's offspring look the same? If no, then explain why they look different.

When 40 is added to the number of miles Karen ran last week, the result is the same as adding 10 to 4 times the number of miles she ran last week. How many mile

How well did feudalism establish order in the Middle ages?

round 7,782 to the nearest hundred

What property is shown by the equation? 1. 0 ÷ (–6) = 0

On a new construction site, an electrician can install a new light fixture in 20 minutes. A project calls for 24 new fixtures to be installed on each of 4 floor

How did the mountains in Greece contribute to the rise of city-states?

In a probability experiment, Craig rolled a six-sided die 55 times. The die landed on a number greater than three 31 times. What is the ratio of rolls greater t