Question

प्रूफ दैट साइन थीटा डिवाइडेड बाय साइन 90 डिग्री माइनस थीटा प्लस कोस थीटा डिवाइडेड बाय कॉस 90 डिग्री माइनस थीटा इज इक्वल टू सेक 90 डिग्री माइनस थीटा कोसक 90 डिग्री माइनस थीटा​

Answer 1

Answer:

Trigonometric ratios of 90 degree plus theta is a part of ASTC formula in trigonometry.

Trigonometric ratios of 90 degree plus theta are given below.

sin (90° + θ) = cos θ

cos (90° + θ) = - sin θ

tan (90° + θ) = - cot θ

csc (90° + θ) = sec θ

sec (90° + θ) = - csc θ

cot (90° + θ) = - tan θ

Let us see, how the trigonometric ratios of 90 degree plus theta are determined.

To know that, first we have to understand ASTC formula.

The ASTC formula can be remembered easily using the following phrases.