Q24. यदि secA = \frac{25}{7} हो, तो sinA = ?
Ans. \frac{24}{25}
Q25. यदि sinθ = \frac{√3}{2} हो, तो (cosecθ + cotθ) = ?
Ans. √3
Q26. यदि (tanθ + cotθ) = 5 हो, तो (tan2θ + cot2θ) = ?
Ans. 23
Q27. यदि tanθ = \frac{8}{15} हो, तो \frac{(2 + 2sinθ)(1 - sinθ)}{(1 + cosθ)(2 - 2cosθ)} = ?
Ans. \frac{225}{64}
Q28. यदि 7sin2θ + 3cos2θ = 4 हो, तो tanθ = ?
Ans. \frac{1}{√3}
Q29. यदि cosθ = 0.6 हो, तो (5sinθ – 3tanθ) = ?
Ans. 0
Q30. यदि (cosX + sinX) = (2)1/2cosx हो, तो (cosX – sinX) = ?
Ans. √2 sinX
Q31. यदि a cosθ + b sinθ = 8 तथा a sinθ – b cosθ = 5 हो, तो (a2 + b2) = ?
Ans. 89
Q32. यदि (tanX + sinX) = m तथा (tanX – sinX) = n हो, तो (m2 – n2) = ?
Ans. 4√mn
Q33. sin230° + 4cot245° – sec260° = ?
Ans. 1/4
Q34. यदि x tan45°.cos60° = sin60°.cot60° हो, तो x = ?
Ans. 1
Q35. यदि tanX = 3cotX हो, तो x = ? और यदिsin2A = cos3A हो, तो A = ?
Ans. x = 60, A = 18
Q36. sin230° cos245° + 4tan230° + \frac{1}{2} . sin290° + \frac{1}{8} . cot260° = ?
Ans. 1
Q37. \frac{tan60° - tan30°}{1 + tan60°tan30°} = ?
Ans. 1/(3)1/2