How do you solve sin squared 45 degrees?

The value of sin square 45 degree + cos square 45 is equal to 1.

1. According to the sine curve, the value of sine ranges from -1 to +1.
2. And the value of sin 45 degree is 1 / .
3. Similarly, the value of cosine ranges from -1 to +1 which is evident from the cosine curve.

How do you find sin 40 without a calculator?

How to Find the Value of Sin 40 Degrees? The value of sin 40 degrees can be calculated by constructing an angle of 40° with the x-axis, and then finding the coordinates of the corresponding point (0.766, 0.6428) on the unit circle. The value of sin 40° is equal to the y-coordinate (0.6428). ∴ sin 40° = 0.6428.

How do you find cot 45?

1. cot45∘=11.
2. csc45∘=√21.
3. sec45∘=√21.

Is there a way to do sin/cos/tan without a calculator?

Originally Answered: Is there a way to do sin, cos, and tan without a calculator? Of course there is. A calculator does it so there is no reason that you can’t use the same methods.

How do you find the sine value of 45 degrees?

Suppose you want to compute the sine of 45°, correct to some number of places, using this power series. First convert 45° to radians to get π /4, which is 0.78539816 to eight places. Then compute the value of

How do you Compute sines and cosines using a calculator?

Computers and calculators use power series to compute sines and cosines. It is approximately possible by using what we call the sine approximation formula given by This formula, as said, is valid only in the given limits.

Is it possible to calculate a single sine from scratch?

That way they could eventually fill out their entire table. In this method calculating a single sine from scratch is not really anything you do — it’s not very much less work than creating the entire table, which is to say: years and years of painstaking manual calculations.