Question

ii) If tan x = -4/3and x lies in fourth quadrant, the value of cos x is
a) - 4/5
b) 3/5
c) -3/5
iii) If sin 0 + cosec0-2, then value of sin’O + cosec?0 is
d) 4/5​

Answer 1

Answer:

b) 3/5

Step-by-step explanation:

tanx=-4/3

Secx=root over of (1+tan^2x)

secx=root over of 1+(-4/3)^2

secx=root over of 1+16÷9

secx=root over of 25/9

secx=+-(5÷3)

then,

cosx=+-(3/5)

if ,x is in 4th quadrant, then the value of cosx is 3/5