Same chapter1 markDifficulty: Easy
The value of sin2θ + cos2θ is:
Trigonometric Identities
Original Khojo Papers practice question — not from a past board paper.
1
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Since 55° = 90° − 35°, sin 55° = cos 35°. The expression becomes sin235° + cos235° = 1.
From the same topic and chapter, at a similar level.
The value of sin2θ + cos2θ is:
Trigonometric Identities
The value of tan 45° is:
Trigonometric Identities
Write the value of sin 60° cos 30° − cos 60° sin 30°.
Trigonometric Identities
Evaluate: sin 30° · cos 60° + cos 30° · sin 60°.
Trigonometric Identities
If tan θ = 4/3, find the value of (sin θ + cos θ)/(sin θ − cos θ).
Trigonometric Identities
Prove that (sec A − tan A)(sec A + tan A) = 1.
Trigonometric Identities