Math, asked by AshfakMathologer, 5 months ago

Examine whether 6sin²x + cosx = 5
is an identity

Answers

Answered by Anonymous

1

LHS

1+cosx−sinx

1+cosx+sinx

Dividing and multiplying by cosx

secx+1−tanx

secx+1+tanx

secx+1−tanx

secx+tanx+sec

2

x−tan

2

x

secx+1−tanx

secx+tanx+(secx−tanx)(secx+tanx)

secx+1−tanx

secx+tanx(secx−tanx+1)

secx+tanx

cosx

1

+

cosx

sinx

=

cosx

1+sinx

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