Simplify
(cos5theta-cos theta)/ (sin5theta-sin theta)

Question

eric_d · Answer

@nirmalnema

eric_d · Answer

= cos5 cos - sin5 sin
is this correct so far ?

eric_d · Answer

@UnkleRhaukus

eric_d · Answer

@ganeshie8

eric_d · Answer

@paki

nirmalnema · Answer

attachment

paki · Answer

= cos5 cos - sin5 sin ==== >  how you obtained this

eric_d · Answer

yes @paki

nirmalnema · Answer

@eric_d  can you simplify it further

anonymous · Answer

see this formula.you will get direct answer

anonymous · Answer

cos(a-b) = cosa cosb + sina sinb

anonymous · Answer

cos(5θ) cos(θ) + sin(5θ) sin(θ)
= cos(5θ - θ)
= cos(4θ)

eric_d · Answer

the given answer is -tan 3 theta

nirmalnema · Answer

@dg2  there is division not addition

anonymous · Answer

cos(5θ - θ)/sin(5θ - θ) is this the question

eric_d · Answer

(cos5theta-cos theta)/ (sin5theta-sin theta)

anonymous · Answer

same ya so we get cos 4θ/sin4θ

nirmalnema · Answer

how do u get that

anonymous · Answer

take cos as common in numerator and sin as common in denominator?

nirmalnema · Answer

that a rubbish thing u cant do that

paki · Answer

@nirmalnema  be cool.. .try to lecture them regarding this please... :)

anonymous · Answer

if i made a blunder i am sorry @nirmalnema

eric_d · Answer

It's alrite........
Thanks everybody...
@MM is guiding me..

nirmalnema · Answer

@dg2  its ok no problem.!!
but always remember this its wrong you cant take it out common like that

anonymous · Answer

multiply cos 3θ in numertor and denominator first