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Question
In ΔABC, if a = 18, b = 24, c = 30 then find the values of sinA
Solution
Given : a = 18, b = 24 and c = 30
∴ 2s = a + b + c
= 18 + 24 + 30
= 72
∴ s = 36
216 = `(1)/(2)`(24)(30) sinA
∴ sinA = `(216)/(12 xx 30)`
= `(216)/(360)`
= `(3)/(5)`.
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