Find the value of sin 270

The value of sin 270 can be found using the value of sin 90

Solution

We know that sin 270 can be expressed as

sin 270= sin(3×90 +0 )

sin(270)=sin(3×90 +0 )

We know that

sin (90° + θ) = cos θ

sin(270)=−cos0

sin(270)=−1.

Hence, sin(270)=−1.

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