NOTES
CBSE CLASS 10 MATHS
TRIGONOMETRY – IMPORTANT QUESTIONS
AND EXAM TIPS
With Step-wise Solutions & Marking
Scheme
As per CBSE Board Pattern
Prepared by Khushi Kumari Sharma
, 1. Important Trigonometric Ratios
For an acute angle θ in a right-angled triangle:
sin θ = (Perpendicular) / (Hypotenuse)
cos θ = (Base) / (Hypotenuse)
tan θ = (Perpendicular) / (Base)
cosec θ = 1 / sin θ
sec θ = 1 / cos θ
2. Standard Trigonometric Values
CBSE CLASS 10 MATHS
TRIGONOMETRY – IMPORTANT QUESTIONS
AND EXAM TIPS
With Step-wise Solutions & Marking
Scheme
As per CBSE Board Pattern
Prepared by Khushi Kumari Sharma
, 1. Important Trigonometric Ratios
For an acute angle θ in a right-angled triangle:
sin θ = (Perpendicular) / (Hypotenuse)
cos θ = (Base) / (Hypotenuse)
tan θ = (Perpendicular) / (Base)
cosec θ = 1 / sin θ
sec θ = 1 / cos θ
2. Standard Trigonometric Values
