evaluate..... sin7π/4....
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Answered by
0
sin(7π4)sin(7π4)
Find the value using the definition of sine.
sin(7π4)
Substitute the values into the definition.
sin(7π4)=−√221sin(7π4)=-221
Simplify the result.
Multiply the numerator by the reciprocal of the denominator.
−√22⋅1-22⋅1
Multiply −1-1 by 11 to get −1-1.
−√22-22
The result can be shown in both exact and decimal forms.
Exact Form:
−√22-22
Decimal Form:
−0.70710678…
Find the value using the definition of sine.
sin(7π4)
Substitute the values into the definition.
sin(7π4)=−√221sin(7π4)=-221
Simplify the result.
Multiply the numerator by the reciprocal of the denominator.
−√22⋅1-22⋅1
Multiply −1-1 by 11 to get −1-1.
−√22-22
The result can be shown in both exact and decimal forms.
Exact Form:
−√22-22
Decimal Form:
−0.70710678…
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3
Sin 7×180/45
Sin235
=-1/root2
Sin235
=-1/root2
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