Question

if sinA=1/2 find the value of sinA(sinA-cosecA)

Answer 1

Sin A =1/2

Cosec A =1/sin A

$= \frac{1}{ \frac{1}{2} }$

=2

So, Sin A (Sin A - cosec A)

=
$= \frac{1}{2} ( \frac{1}{2} - 2)$


$= \frac{1}{2} ( \frac{1 - 4}{2} )$


$= \frac{1}{2} \times \frac{ - 3}{2}$


$= \frac{ - 3}{4}$


So, SinA (Sin A - cosec A) =-3/4

Answer 2

Answer:

sin=p/h

• sinA(sinA-cosecA)
• 1/12[1/12-12/1]
• 1/12×[1-144/12]
• 1/12×143/12
• 143/144

Step-by-step explanation: