If \( t = \tan\left(\frac{1}{2}A\right) \), what is the value of \( \cos A \) in terms of \( t \)?
University of Ilorin MTH101 salang past question
- \(\frac{1 - t^2}{1 + t^2}\)
- \(\frac{2t}{1 + t^2}\)
- \(\frac{1 + t^2}{1 - t^2}\)
- \(\frac{t^2 - 1}{t^2 + 1}\)
Register free to see the answer and step-by-step explanation
More University of Ilorin MTH101 salang past questions
Related questions
- If 8, X, Y, Z, 20 are in AP. Find the values of X, Y, and Z.
- If cot A = 12/5, evaluate (cot 2A)/(sin A + cos A). Given that A is an acute angle.
- Factorise 25x² - 15x + 2 = 0.
- Let P = {1, 2, 3, 4, 5, 6, 7} and Q = {2, 4, 6, 8, 10}. Find P - Q.
- Write the general nth term of the sequence 3, 4, 6, 10, 18, ...
- In a class of 20 students, 10 like Mathematics, 14 like English. If 6 students like both, how many students like neither Math nor English?
