If CosA= 3/5, then the value of ( sinA×tanA+1)/2tan^2 A is
1 point
88/160
91/160
92/160
93/160
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cosA=3/5
= Base / Hypotenuse
Therefore, base = 3 units
hypotenuse = 5 units
By using Pythagoras theorem,
Perpendicular = √( 5^2 - 3^2 )
= √ 16
= 4 units
( sinA × tanA + 1 ) /2 tan^2 A
= ( 4/5 × 4/3 + 1 ) / 2 × 16/9
= ( 31/15 ) / 32/9
= 31 / 15 × 9 / 32
= 93 / 160
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