If x = 4 cos A + 5 sin A snd y = 4 sin A – 5 cos A, then the value of x2+y2 is :
X = 4 cos A + 5 sin A y = 4 sin A − 5 cos A x 2 + y2 = (4 cos A + 5 sin A)2 + (4 sin A − 5 cos A)2 ((a + b)2 = a2 + b2 + 2ab) = (16cos2A+25sin2A +40 cos Asin A)+(16 sin2A +25cos2A− 40cosA sin A )2 (sin2A+ cos2A=1) =16+25=41
In respect to the Web, what is an ontology?
A permanent storage device that stores information using electricity, such as a flash drive or memory card.
Which of the following refers to the temporary storage location used for cut, copy and paste?
A ______ is a portable computer that encompasses a microprocessor, rechargeable battery, fold-down screen, keyboard and mouse.
________ term used to describe a software program or section of a program that is running in a multitasking environment.
Date and Time are located on the desktop at
What do server machines use to designate each of their services?
According to StatCounter, what percentage of computers in the consumer market are Macs?
Which of the following is used in second generation computer?
A __________ is a system designed to prevent unauthorized access to or from a private network
