Math, asked by krishu112, 1 year ago

if cosec A =2 find the value of 1 upon tanA+sinA upon 1+cosA

Answers

Answered by mysticd
4
Hi ,

cosec A = 2 ----( 1 )

Now ,

1/tanA + sinA/( 1 + cosA )

= cotA + sinA/ ( 1 + cosA )

= cosA/sinA + sinA/( 1 + cosA )

= [ cosA( 1 + cosA ) + sin² A ]/[ sinA( 1 + cosA )]

= ( cosA + cos² A + sin² A ) / [ sinA ( 1 + cosA )]

= ( cosA + 1 ) / [ sinA( 1 + cosA ) ]

= 1/sinA

= cosecA

= 2 [ from (1 ) ]

I hope this helps you.

: )

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