shaalaa.com
S

Solution - Trigonometric Ratios of Complementary Angles

Account
User


Login
Register


      Forgot password?
Share
Notifications

View all notifications
Books Shortlist
Your shortlist is empty

Question

If A, B and C are interior angles of a triangle ABC, then show that `\sin( \frac{B+C}{2} )=\cos \frac{A}{2}`

Solution

You need to to view the solution
Is there an error in this question or solution?

Similar questions VIEW ALL

Express the trigonometric ratios sin A, sec A and tan A in terms of cot A.

view solution

Without using trigonometric tables evaluate the following:

`(i) sin^2 25º + sin^2 65º `

view solution

If tan 2A = cot (A – 18°), where 2A is an acute angle, find the value of A

view solution

If sec 4A = cosec (A− 20°), where 4A is an acute angle, find the value of A.

view solution

`\text{Evaluate }\frac{\tan 65^\circ }{\cot 25^\circ}`

 

view solution

Content BooksVIEW ALL [1]

Reference Material

Solution for concept: Trigonometric Ratios of Complementary Angles. For the course 8th-10th CBSE
S