Question

Q13.) The value of sin(-330') is
options
O (-1)/2
O 1/2
O (13)/2
O (13)/2​

Answer 1

Answer:

(-1)/2

Step-by-step explanation:

We know from trigonometry that

sin(A−B)=sinA⋅cosB−cosA⋅sinB

Hence

sin330=sin(360−30)=sin360⋅cos30−cos360⋅sin30=0⋅√3/2−1⋅1/2=−1/2

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