Math, asked by khushi9d11, 1 year ago

cosec theta=√5. Find cot theta-cos theta

Answers

Answered by Ezekiel9

cosec@=√5 then sin@=1/√5 hence cos@=2/√5 and cot@=cos@/sin@ so cot@=2 and now cot@-cos@=2-(2/√5)

Ezekiel9: i will do it but how can i upload the image.

khushi9d11: u can

abhi204: yeah u can

divyam5: freinds as we know that cosec theta=h/p and according to question cosec theta=√5.we can also write this as √5/1 so from this h=√5and p=1. now we will apply Pythagoras theorem p=√hsquare-bsquare=√√5 square-1 square=√5-1=√4=2 so the value of b is 2 now apply the values according to question

khushi9d11: thanks

divyam5: ur most wlcm

divyam5: tum samjh gyi na?

khushi9d11: yeh

khushi9d11: tysm

divyam5: most wlcm

Answered by divyam5

cot theta-cos theta =-3/2(by using Pythagoras theorem we found p=2 and we know that cosec theta=h/b,here h=√5 and b=1)

khushi9d11: can u do it on paper

divyam5: sorry freind my ans was wrong but now i am giving u right ans i think u know Pythagoras theorem ,firstly we know that cosec theta=h/p=√5/1 now find out value of b by using Pythagoras theorem. and apply the values according to question. which is cot theta - cos theta =b/p-b/h=2/1-2/√5=2√5-2/√5=2(√5-1)/√5 =answer

khushi9d11: thanks

divyam5: wlcm

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