" cano "+2cos20+" Atamic "+8cos3 alpha=cot0

(cos alpha + 2 cos 3 alpha + cos 5 alpha )/(cos 3 alpha + 2 cos 5 alpha + cos 7 alpha ) = cos 3 alpha sec 5 alpha .

If cos beta cos (gamma- alpha)= cos (alpha- beta+ gamma) , prove that cot alpha+ cot y= 2cot beta

The maximum value of ( cos alpha_1) ( cos alpha_2) … ( cos alpha_n) under the restrictions 0 le alpha_1, alpha_2 ....... alpha_n le (pi)/(2) and cot alpha_1. cot alpha_2 ……cot alpha_n = 1 is

If cos x + cos y + cos alpha = 0 and sin x + sin y + sin alpha = 0 then cot ((x + y) / (2)) =

If cos x + cos y + cos alpha = 0 and sin x + sin y + sin alpha = 0 , then cot((x+y)/(2)) =

If sin alpha sin beta - cos alpha cos beta + 1=0, then the value of 1+cot alpha tan beta is

cos alpha cos 2 alpha cos 4 alpha cos 8 alpha = (1)/(16), if alpha = 24 ^(@)

If 32 tan^8 theta =2 cos^2 alpha-3 cos alpha and 3cos2 theta =1, then the general value of alpha is

If 32 tan^8 theta= 2 cos^2 alpha-3 cos alpha and 3 cos 2 theta=1 , then find the general value of alpha .