Sin 7 Degrees

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

What is sin 7°?

Answer

sin 7° ≈
0.1219

Angle in radians: 7° = 7π/180. The point of the angle is in quadrant I, where sine is positive.

≈ — rounded to 4 decimal places. sin 7° can't be written with square roots: 7° is not a multiple of 3°.

P(cos 7°, sin 7°) ≈ (0.9925, 0.1219)

xyOP

P(cos 7°, sin 7°) ≈ (0.9925, 0.1219)

Highlighted: the projection on the y-axis — sine, y ≈ 0.1219.

All four functions of 7°
FunctionExact valueDecimal
sin 7°—≈ 0.1219
cos 7°—≈ 0.9925
tan 7°—≈ 0.1228
cot 7°—≈ 8.1443

See Also

Recalculate with different values ↑

Sine of nearby angles

Anglesin
4°≈ 0.0698
5°≈ 0.0872
6°≈ 0.1045
7°≈ 0.1219
8°≈ 0.1392
9°≈ 0.1564
10°≈ 0.1736

FAQ

What is sin 7°?

sin 7° ≈ 0.1219

Why does sin 7° 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°. 7° is not, so no such exact form exists; the value is used as a decimal: sin 7° ≈ 0.1219.

Why does a calculator show 0.6570 for sin 7?

The calculator is in radian mode (RAD): it takes sin 7 as the sine of 7 radians, sin 7 rad ≈ 0.6570. Switch it to degrees (DEG): sin 7° ≈ 0.1219. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

See Also