Simplify the following expression algebraically. $$\cos \left( \frac { 3 \pi } { 2 } - x \right)$$
A) $\sin x$
B) $\frac { 3 } { 2 } \sin x$
C) $- \cos x$
D) $- \sin x$
E) $- \frac { 3 } { 2 } \sin x$

Question

Simplify the following expression algebraically.​ $$\cos \left( \frac { 3 \pi } { 2 } - x \right)$$ ​
A) $\sin x$
B) $\frac { 3 } { 2 } \sin x$
C) $- \cos x$
D) $- \sin x$
E) $- \frac { 3 } { 2 } \sin x$

Quizplus · Accepted Answer

Since the expression is a hexadecimal number, we can simply add 280 (which is the hexadecimal representation of 640 in decimal) to the last four digits of the number to simplify it. Therefore, the answer is 11ea99db_b45d_b931_94ac_c562eefeda90_TB4590_11.

Simplify the Following Expression Algebraically cos⁡(3π2−x)\cos \left( \frac { 3 \pi } { 2 } - x \right)cos(23π​−x)

Simplify the Following Expression Algebraically $\cos \left( \frac { 3 \pi } { 2 } - x \right)$