`cos e c(360^0)/7+cos e c(540^0)/7=` `cos e c(180^0)/7` (b) `cos e c(90^0)/7` `sec(180^0)/7` (d) `sec(90^0)/7`

Evaluate : (sin50^0)/(cos40^0)+(cos e c40^0)/(sec50^0)-4cos50^0cos e c40^0

If cos ec(360^(@))/(7)+cos ec(540^(@))/(7)=csc theta where theta in(0,90^(@)), then theta

The value of (cos (90^(@) + A) sec ( 360^(@) - A) tan ( 180^(@) - A))/( sec (A - 720^(@)) sin ( 54 0 ^(@) + A) cot (A - 90^(@))) is

Prove that: (cos ec(90^(@)+theta)+cot(450^(@)+theta))/(cos ec(90^(@)-theta)+tan(180^(@)-theta))+(tan(180^(@)+theta)+sec(180^(@)-theta))/(tan(360^(@)+theta)-sec(-theta))=2

Prove that ("cos"(90^0+theta)"sec"(-theta)"tan"(180^0-theta))/("sec"(360^0-theta)"sin"(180^0+theta)"cot"(90^0-theta))=-1.

If xsin45^0cos^2 60^0=(tan^2 60^0cos e c 30^0)/(s e c 45^0cot^2 30^0), t h e n x= 2 b. 4 c. 8 d. 16

Find the value of (2^0 + 4^0)/7^0 a)2 b)0 c)9 d) 6/7

If 16cot x=12, then (sin x-cos x)/(sin x+cos x) equals (1)/(7)(b)(3)/(7)(c)(2)/(7)(d)0