Question

sinx +cosx=?solve the question​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Using Pythagorean Identity

sin

2

x

+

cos

2

x

=

1

, so

cos

2

x

=

1

−

sin

2

x

cos

x

=

±

√

1

−

sin

2

x

sin

x

+

cos

x

=

sin

x

±

√

1

−

sin

2

x

Using complement / cofunction identity

cos

x

=

sin

(

π

2

−

x

)

sin

x

+

cos

x

=

sin

x

+

sin

(

π

2

−

x

)