Trigonometric Identities
Math ⇒ Trigonometry
Trigonometric Identities starts at 10 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Trigonometric Identities.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 10
If cosθ = 0.5 and θ is in the first quadrant, find secθ.
If cosθ = 0.6 and θ is in the first quadrant, find sinθ.
If \cos\theta = \frac{5}{13} and \theta is in the first quadrant, find \tan\theta.
If sinθ = 0.6 and θ is in the first quadrant, find cos²θ.
If sinθ = 0.6 and θ is in the first quadrant, find tanθ.
If sinθ = 0.8 and θ is in the first quadrant, find cscθ.
If \sin\theta = \frac{3}{5} and \theta is in the first quadrant, find \cos\theta.
If \tan\theta = \frac{3}{4} and \theta is in the first quadrant, find \sin\theta.
State the co-function identity for \cot(90^\circ - \theta).
State the co-function identity for \sec(90^\circ - \theta).
State the Pythagorean identity involving cotangent and cosecant.
State the reciprocal identity for cotθ.
State the reciprocal identity for cscθ.
State the reciprocal identity for secθ.
If tanθ + cotθ = 2, find the value of sin²θ + cos²θ.
Prove that (1 + tanθ)² + (1 - tanθ)² = 2(1 + tan²θ).
