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In A B C ,(a+b+c)(b+c-a)=k b c if k<0 ...

In ` A B C ,(a+b+c)(b+c-a)=k b c` if `k<0` (b) `k >0` `=4`

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
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  3. In A B C ,(a+b+c)(b+c-a)=k b c if k<0 (b) k >0 =<k<4 (d) k >4

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  4. Find the number of solution of the equation e^(sinx)-e^(-sinx)-4=0

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