Question

Prove that Cot260°(1-Cos260°) =Cos260°

Answer 1

Answer:

Besides cos260°, similar trigonometric calculations on our site include, but are not limited, to:

Cos 115°

Cos 6.3

Cos -Pi/12

The identities of cosine 260° are as follows:

cos260°

= sin (90°+260°) = sin 350°

= sin (90°-260°) = sin -170°

-cos260°

= cos (180°+260°) = cos 440°

= cos (180°-260°) = cos -80°

Note that cos260° is periodic: cos (260° + n × 360°) = cos 260 degrees, n∈Z.

There are more formulas for the double angle (2 × 260°), half angle ((260/2)°) as well as the sum, difference and products of two angles such as 260° and β.

You can locate all of them in the respective article found in the header menu. To find everything about cos -260° click the link. And here is all about sin 260°, including, for instance, a converter.

In terms of the other five trigonometric functions, cos of 260° =

±1−sin2⁡260∘

±11+tan2⁡260∘

±cot⁡260∘1+cot2⁡260∘

1sec⁡260∘

±csc2⁡260∘–1csc⁡260∘

As the cosine function is the reciprocal of the secant function, 1 / sec 260° = cos260°.

In the next part we discuss the trigonometric significance of cos260°, and there you can also learn what the search calculations form in the sidebar is used for.