Complete the identity.
+ sec ? cos ? = ?
A. tan2 ?
B. csc2 ?
C. sec2 ?
D. 1
Answer: C
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The present value of an annuity due is determined on the date of the last cash flow in the series.
Answer the following statement true (T) or false (F)
Prorate the given expenses to find the monthly cost. Sarah takes courses on a quarter system. Three times a year, she takes 15 credits at a tuition rate of 
per credit; her fees are 
per quarter and her room in a shared house costs 
per week. Round your answer to the nearest dollar.
A. $1828 B. $1043 C. $1328 D. $2563
Solve the problem.If two sound sources at the same volume are equidistant from a microphone, the pressure on the microphone is given by p = a cos ?1t + a cos ?2twhere a, ?1, ?2 are constants and t is time. Write p as a product of cosine functions.
What will be an ideal response?
Which approach builds on Piaget's ideas, and views cognition as composed of different types of individual skills, while integrating terminology from information-processing approaches?
A. neo-Piagetian B. parallel processing approach C. social-cognitive learning theory D. cognitive perspective