If sin 3A = cos (A – 10), where 3A is an acute angle, then value of A is equal to: (1)
A. 30°
B. 35°
C. 25°
D. 20°
Answer:C
If sin 3A = cos (A – 10), where 3A is an acute angle, then value of A is equal to: (1)
A. 30° B. 35° C. 25° D. 20°