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Q20. If A + B = 90°, cot B = 3/4 then tan A is equal to:
Q19. If x sin (90° – θ) cot (90° – θ) = cos (90° – θ), then x is equal to
Q18. Sinθ/1+cosθ is
Q17.3 sin2 20° – 2 tan2 45° + 3 sin2 70° is equal to
Q16.If sin 2A = 12 tan2 45° where A is an acute angle, then the value of A is
Q15. If cos (81 + θ)° = sin(k3 – θ)° where θ is an acute angle, then the value of k is
Q14. 2(sin6 θ + cos6 θ) – 3(sin4 θ + cos4 θ) is equal to
Q13. If sin θ + sin2 θ = 1 then cos2 θ + cos4 θ is equal
Q12. If cos A + cos2 A = 1, then sin2 A + sin4 A is equal to
Q11. 1+tan2A/1+cot2A is equal to