Question

if sinx = -3/5 where X lies in 4th quadrant find tanx/2
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Answer 1

Answer:

tanx/2=-3/8

Step-by-step explanation:

Sinx=-3/5 (Given)

As we know ,

(sinx)^2 + (cosx)^2 =1

(-3/5)^2 + (cosx)^2 = 1

i.e. Cos x = ±4/5

Cosx = 4/5 ....... (Because X lies in 4th quadrant )

As we know , tanx= sinx/cosx

i.e. tanx/2=sinx/cosx/2

tanx/2=(-3/5) / (4/5) / 2

tanx/2= -3/8

Hope you will understand