Question

find the exact value sin (-45°)

Answer 1

Question ⤵️

find the exact value sin (-45°).

Answer ⤵️

Sine function defines a relation between the acute angle of a right-angled triangle and the opposite side to the angle and hypotenuse.

...

Sin 45° = \sqrt{2/4} = 1/\sqrt{2}

Sine 0° 0

Sine 45° or Sine π/4 1/ \sqrt{2}

Sine 90° or Sine π/2 1

Sine 120° or Sine 2π/3 \sqrt{3}/2

Hope it helps you ✌️

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

We have,

sin(-45°)

which is equal to - sin(45°)

and, -sin(45°)=-1/√2

= -0.707 (approx.)