Advertisements
Advertisements
Question
In ΔABC with usual notations, if ∠A = 30° and a = 5, then `s/(sumsinA)` is equal to ______.
Options
3.00
4.00
5.00
6.00
MCQ
Fill in the Blanks
Solution
In ΔABC with usual notations, if ∠A = 30° and a = 5, then `s/(sumsinA)` is equal to 5.00.
Explanation:
`(a + b + c)/(2[sinA + sinB + sinC])`
= `(2R[sinA + sinB + sinC])/(2[sinA + sinB + sinC])`
= R = `5/(2sinA)` = `5/(2sin30^circ)` = 5
shaalaa.com
Is there an error in this question or solution?
