JEE Main 2024 Mathematics question
If sin x = −, where π < x < , then 80(tan²x − cos x) is equal to:
Answer: (A)
Solution
cos x = −4/5 and tan x = 3/4, so 80(9/16 + 4/5) = 45 + 64 = 109.
If sin x = −, where π < x < , then 80(tan²x − cos x) is equal to:
cos x = −4/5 and tan x = 3/4, so 80(9/16 + 4/5) = 45 + 64 = 109.