2014 · Q62
What is (cosec x − sin x)(sec x − cos x)(tan x + cot x) equal to?
Elementary MathematicsTrigonometry
- Asin x + cos x
- Bsin x − cos x
- C2
- D1
Explanation
= (cos²x/sin x)(sin²x/cos x)(1/(sin x cos x)) = 1.
What is (cosec x − sin x)(sec x − cos x)(tan x + cot x) equal to?
Explanation
= (cos²x/sin x)(sin²x/cos x)(1/(sin x cos x)) = 1.