Question

Find
the
value of sin 165°​

Answer 1

Answer:

0.258819045

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

sin 165° = sin (180⁰ - 15⁰)

= Sin 15⁰

now by using Sin (A- B) = Sin ACos B - Cos ASin B

so,

Sin (45⁰ - 30⁰) = Sin 45⁰Cos30⁰ - Cos45⁰Sin 30⁰

= 1/√2 X √3/2 - 1/√2 X 1/2

Sin 15⁰ = (√3 - 1) / 2√2