3. Trigonometry

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Angles and their measures in degrees and in radians. Trigonometrical ratios. Trigonometric identities Sum and difference formulae. Multiple and Sub-multiple angles. Inverse trigonometric functions. Applications – Height and distance, properties of triangles.

Important Information

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• www.joinindianarmy.nic.in
• www.nausena-bharti.nic.in
• www.careerairforce.nic.in
• www.upsc.gov.in

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Career in Defense Forces (Officer Rank)

• Army
• Navy
• Air Force

Written NDA

• General Ability Test (Paper–II)
• Scheme of Examination
• Syllabus of the Examination (Paper–I)

Gallantry Awards

• Veer Chakra
• Shaurya Chakra
• Param Vir Chakra
• Maha Vir Chakra
• Kirti Chakra
• Ashoka Chakra