1. \(\frac{1+tan^2 A}{1+cot^2 A}\) is equal to
2. If cos A + cos² A = 1, then sin² A + sin4 A is equal to
3. If sin θ + sin² θ = 1 then cos² θ + cos4 θ is equal
4. 2(sin6 θ + cos6 θ) - 3(sin4 θ + cos4 θ) is equal to
5. If cos (81 + θ)° = sin(\(\frac{k}{3}\) - θ)° where θ is an acute angle, then the value of k is
6. 3 sin² 20° - 2 tan² 45° + 3 sin² 70° is equal to
7. If sin 2A = \(\frac{1}{2}\) tan² 45° where A is an acute angle, then the value of A is
8. \(\frac{sin θ}{1 + cos θ}\) is
9. If x sin (90° - θ) cot (90° - θ) = cos (90° - θ), then x is equal to
10. If A + B = 90°, cot B = \(\frac{3}{4}\) then tan A is equal to: