Question

Find the value of sin690°​

Answer 1

Answer:

there is no value like that!

Step-by-step explanation:

Answer 2

Question: Find the value of sin 90°?

Answer:

From this circle and with the basic knowledge of trigonometry, we can conclude that, for the given right angled triangle with perpendicular measuring ‘y’ units and it's base measuring ‘x’ units.

We also know that, for any right angled triangle with one of the angle as θ,

sinθ equals the ratio of the length of the side opposite to that angle i.e. perpendicular and length of the longest side i.e. the hypotenuse.

Clearly,from the figure, Sinθ=y/1 (as the hypotenuse is the radius here which equals one unit)

Now, we begin measuring our angled according to the question from the origin from the first quadrant.

We end up at 90° when we reach the positive y axis.

Now, what we find here is that the value of y becomes equal to 1 unit as it touches the circumference of the circle.

Therefore, y=1unit

Now, we find that sinθ = y/1 = 1/1 = 1

Which is….sin90=1

Hence, this is the desired solution.

Hope this helped.

Step-by-step explanation: