What is sin30 ° to 60 ° equal to? Put sin30 ° equal to the root of 2 / 3

What is sin30 ° to 60 ° equal to? Put sin30 ° equal to the root of 2 / 3

1 / 2 at 30 degrees, 2 / 3 at 45 degrees and 3 / 3 at 60 degrees

Why does sin30 get 1 / 2 and how does it derive?

First of all, when the center line on the hypotenuse of a right triangle is equal to half of the hypotenuse, sin is the opposite side is equal to half of the hypotenuse, that is to say, the opposite side is also equal to half of the hypotenuse

1+2×sin30°×cos30°

Original formula = 1 + 2 × 1 / 2 ×√ 3 / 2 = 1 + √ 3 / 2

Sin30 degree = 1 / 2 ordinary triangle can be used

Of course it works
sin(30°)=1/2
The trigonometric values of many special angles are best to remember
If you do not understand, please hi me, I wish you a happy study!

How to calculate sin30 ° = 2: x?

sin30°=1/2=2：X
X=4

How to calculate sin30, the result is 1 / 2

With a right triangle
Drawing
That's it
Opposite side is better than bevel side
Just take the numbers in

Sin30 degree = root of quarter sign two?

a half

One third, root 2, sin30, how many irrational numbers are there

One third can be expressed as a fraction, so it is a rational number
Radical 2 is an irrational number
Sin30 = 0.5 is a rational number
There is one

Root 2 * sin45 degree + sin30 degree - 2 * cos45 degree

sin45=√2/2 sin30=1/2 cos45=√2/2
So √ 2sin45 + sin30-2cos45 = √ 2 / 2 * √ 2 + 1 / 2 - √ 2 / 2 * 2
=1+1/2-√2
=3/2-√2

What is the proof that sin30 is equal to half? Urgent need

First of all, the three angles of the equilateral triangle ABC are 60 ° and draw a bisector from a to BC compared with E. then AB = AC, AE is the common edge, BAE = angle, CAE = 30 ° between the triangle Abe and ace. Then be = EC = AB / 2, angle AEB = angle AEC = 90 °. Then sin angle BAE = AB / be = 1 / 2, that is sin30 ° = 1 / 2