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Math Drills
Trigonometric ratios & functions
Double- & half-angle formulas
Practice 1
Trigonometric ratios & functions
Double- & half-angle formulas
1 / 5
Standard
Find the value when
x
=
5
π
8
x = \frac{5\pi }{8}
x
=
8
5
π
.
sin
(
2
x
)
\sin\left(2x\right)
sin
(
2
x
)
1
2
2
\frac{\sqrt{2}}{2}
2
2
2
−
2
2
-\frac{\sqrt{2}}{2}
−
2
2
3
−
1
2
-\frac{1}{2}
−
2
1
4
1
2
\frac{1}{2}
2
1
Answer
