Trigonometryeasy · Past Paper
Identify the correct relation:
Asec^2(A) + tan^2(A) = 1
Bcosec^2(A) - cot^2(A) = 1
Csin^2(A) - cos^2(A) = 1
Dtan^2(A) - sec^2(A) = 1
✓ Correct Answer: B — cosec^2(A) - cot^2(A) = 1
This is one of the three fundamental Pythagorean identities.
Share this question
More from Trigonometry
- From a point on the ground, the angle of elevation of a jet plane is 60°. After a flight of 15 seconds, it becomes 30°. If plane flies at 1500√3 m, find speed.
- Express tan θ in terms of sin θ and cos θ.
- If 5 tan θ = 4, then (5 sin θ - 3 cos θ) / (5 sin θ + 2 cos θ) is equal to:
- Value of cos 75° using compound angle formula is:
- If a pole of height h is at the center of a square of side 'a', and θ is elevation of its top from a corner, then: