Discussion
What is the value of \(\sin(90° - A)\)?
Answer: B
Sine and cosine are cofunctions:
\[ \sin(90^{\circ} - A) = \cos A \]
The two angles are complementary, and in a right triangle the side opposite one is adjacent to the other - which is where the identity comes from.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development