Question
Mathematics Question on Trigonometric Equations
The value of 36 (4 cos² 9º -1)(4 cos² 27° -1)(4 cos² 81°-1)(4 cos² 243° - 1) is
A
18
B
27
C
36
D
54
Answer
36
Explanation
Solution
The correct option is(C): 36
The value of 36 (4 cos² 9º -1)(4 cos² 27° -1)(4 cos² 81°-1)(4 cos² 243° - 1) is
18
27
36
54
36
The correct option is(C): 36