We have to find the measure of Angle BCA if line AD is a tangent to circle B. Then we have to choose the correct answer. Tangent line is a line that touches a circle at exactly 1 point. The tangent line ( here AD ) at point C is perpendicular to the radius ( here BC ) to that point. Therefore measure of Angle BCA is 90°. C. 90°.
The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.
Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items