Class 10 Maths

ICSE Class 10 Mathematics 2022 Semester-1 Sample Paper

There are three sections in the paper. Maximum Marks are 40 and Time allowed is one and a half hours. All questions are compulsory.

Read more …

ICSE Questions & Answers: Maths - Trigonometric Identities

1. Prove the standard identity sec2θ - tan2θ = 1 by using sin2θ + cos2θ = 1?

LHS = sec2θ - tan2θ

= 1/cos2θ - sin2θ/cos2θ

= (1 - sin2θ)/cos2θ

= cos2θ/cos2θ

= 1

Read more …