If a*cos x + b*cos x = c, then the value of (a*sin x – b*cos x)2 is
A. a2 + b2 + c2
B. a2 – b2 – c2
C. a2 – b2 + c2
D. a2 + b2 – c2
Answer:A
If a*cos x + b*cos x = c, then the value of (a*sin x – b*cos x)2 is
A. a2 + b2 + c2 B. a2 – b2 – c2 C. a2 – b2 + c2 D. a2 + b2 – c2