`sin(90^@ +A)/(cosA) - sin(180^@ - A)/(sin(-A))+ tan(270^@ +A)/(cot (-A))=`
(A) -3
(B) 1
(C) -1
(D)3

cos A + sin (270 ^ (@) + A) -sin (270 ^ (@) - A) + cos (180 ^ (@) + A) = 0

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

cosA+sin(270^(@)+A)-sin(270^(@)-A)+cos(180^(@)+A)=?

((1180 + A) * tan (270 + A) * sin (360-A)) / (cos (180-A) * cot (90 + A) * cos (-A) =)

(1 + cot A + tan A) (sin A-cos A) = sin A tan A-cot A cos A

If (tan3A)/(tan A)=k(k!=1) then which of the following is not true? (a) (cos A)/(cos3A)=(k-1)/(2)(b)(sin3A)/(sin A)=(2k)/(k-1)(c)(cot3A)/(cot A)=(1)/(k)(d) none of these

2sin 60^(@)-cos180^(@)+(1//3)sin270^(@)= A) sqrt2+(3)/(2) B) sqrt3+(2)/(3) C) sqrt2-(3)/(2) D) sqrt3-(2)/(3)