Revise trigonometric ratios of sine, cosine and tangent and calculate angles in right-angled triangles with this BBC Bitesize GCSE Maths OCR study guide.

MCQs on CBSE Class 10 Maths Chapter 9 Applications of Trigonometry are provided here to prepare for the Board Exam 2021-2022.

The proportion of US adults who have ever been diagnosed with depression ranges greatly depending on where they live.

While altitude appears to be a risk factor for suicide, Kious said, it’s tough to gauge how moving to a higher or lower elevation would affect an individual’s suicide risk or depression.