Question

value of sin 60 and cos 60

Answer 1

Sin60'= root 3 by 2
Cos60' =1 by 2

Answer 2

Answer:

value of sin 60=√3/2

value of cos 60=1/2

Step-by-step explanation:

value of sin 60

The value of sin 60 degrees in decimal is 0.866025403.

Sin 60 degrees =(1.04719 . . .).

We know, using degree to radian conversion, θ in radians = θ in degrees × (pi/180°)

=60 degrees = 60° × (π/180°) rad = π/3

∴ sin 60°

= sin(1.0471)

= √3/2

value of cos 60:

90° – 30° = 60°  This is the equation  (1)

According to the  trigonometric formula, sin (90° – a)  represents the  cos

Sin (90° – 60°) = cos 60°

sin 30° = cos 60° is belongs to the equation (2)

Since the value of sin 30 is ½,

Substitute this value in (2).

½ = cos 60°

Hence, the value of cos 60 degrees is ½.

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