© examsiri.com
Question : 128 of 180
Marks:
+1,
-0
Solution:
‌tan(cos−1(‌)−sin‌−1(‌))‌=tan(‌−sin‌−1(‌)−sin‌−1(‌)) [∵cos−1x=‌−sin‌−1x] ‌=tan(‌−(sin‌−1‌+sin‌−1‌))‌=tan(‌−sin‌−1(‌⋅√1−‌−sin‌−1x].‌=tan(‌−sin‌−1(‌⋅‌⋅√1+‌⋅‌))‌=cot(sin‌−1‌))‌=cot(cot−1‌)=‌[∵tan(‌−x)=cot‌x]
© examsiri.com
Go to Question: