Sin 17 Degrees

Sin, Cos, Tan, Cot of an Angle
Function
Angle (°)

What is sin 17°?

Answer

sin 17° ≈
0.2924

Angle in radians: 17° = 17π/180. The point of the angle is in quadrant I, where sine is positive.

≈ — rounded to 4 decimal places. sin 17° can't be written with square roots: 17° is not a multiple of 3°.

P(cos 17°, sin 17°) ≈ (0.9563, 0.2924)

xyOP

P(cos 17°, sin 17°) ≈ (0.9563, 0.2924)

Highlighted: the projection on the y-axis — sine, y ≈ 0.2924.

All four functions of 17°
FunctionExact valueDecimal
sin 17°—≈ 0.2924
cos 17°—≈ 0.9563
tan 17°—≈ 0.3057
cot 17°—≈ 3.2709

See Also

Recalculate with different values ↑

Sine of nearby angles

Anglesin
14°≈ 0.2419
15°(√6 − √2)/4
16°≈ 0.2756
17°≈ 0.2924
18°(√5 − 1)/4
19°≈ 0.3256
20°≈ 0.3420

FAQ

What is sin 17°?

sin 17° ≈ 0.2924

Why does sin 17° have no exact value?

A trigonometric value of a whole number of degrees can be written with square roots only when the angle is a multiple of 3°. 17° is not, so no such exact form exists; the value is used as a decimal: sin 17° ≈ 0.2924.

Why does a calculator show −0.9614 for sin 17?

The calculator is in radian mode (RAD): it takes sin 17 as the sine of 17 radians, sin 17 rad ≈ −0.9614. Switch it to degrees (DEG): sin 17° ≈ 0.2924. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

See Also