CBSE Class 10 Maths Introduction to Trigonometric Identities

Q.

sec2θ - (tan2θ - 1) = 



Q.

sec2θ - 2tan2θ = 



Q.

(1 - sin θ) (1 + sin θ) = 



Q.

sinnx + cosn x = 1 is true for n = 



Define self & mutual inductance & their SI units. Working principle of transformer. Relate time varying magnetic flux with self induced or back emf.