Math, asked by kumaramresh8501, 5 hours ago

Prove that cos( 3π/ 2 + ) cos(2 + ) [cot ( 3π/2 - ) + cot(2 + )]=1.​

Answers

Answered by rajveerkumar15993
1

Answer:

L.H.S.=cos(

2

+x)cos(2π+x)[cot(

2

−x)+cot(2π+x)]

=sinxcosx[tanx+cotx]

=sinxcosx(

cosx

sinx

+

sinx

cosx

)

=(sinxcosx)[

sinxcosx

sin

2

x+cos

2

x

]

=1=R.H.S.

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