Question No 4 (part ii ,iii ,iv) , Question No. 5

Lesson#10
Question No 4 (part ii ,iii ,iv)
Q4: Find the values of remaining trigonometric function:
(ii) cos⁡=9/41 and the terminal arm of angle is in quadrant IV.......
In forth quadrant all the remaining |trigonometric functions are negative.
(iii) cos⁡=−√3/2 and the terminal arm of angle is not in quadrant IV.
Math.Ex.9.2, Part10(9.2),
Question No. 5
Q5: If cot⁡=15/8 and the terminal arm of angle is not in quadrant.
Find the values of cos and cosec .
Chapter No. 9
Fundamentals of Trigonometry
Exercise No. 9.2
mathematics
part 1