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PLEASE HELP
Given that angle DAB and angle DCB are right angles and measure BDC = 54°, what is mCAD? (The figure is not drawn to scale.)
A. 342
B. 216
C. 324
D. 288

PLEASE HELP Given that angle DAB and angle DCB are right angles and measure BDC 54 what is mCAD The figure is not drawn to scale A 342 B 216 C 324 D 288 class=

Respuesta :

Felecityyy
 The arc mCAD is 288.

Given: DAB and DCB are right angles; BDC = 54°
Required: arc mCAD
Solution:
 (2 x 54°) + (2 x 54°) + (2 x 36°) = 288
 
Note: in getting 36°, deduct 54° and 90° (right angle) from 180° (which is the total degrees inside a triangle)
   = 180° - 54° - 90°
   = 36° - this is the angle CBD or angle ABD

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