Question

find the other trigonometric function Cos Theta = -3/5 and 180° < Theta < 270°​

Answer 1

Answer:

sin Ф=-4/5, cosec Ф=-5/4

tanФ=4/3, cotФ=3/4

cos Ф=-3/5 ,sec Ф=-5/3

Step-by-step explanation:

180° < Ф < 270°​

so Ф is in III quadrant so tan Ф and cot Ф are +ve

and others are -ve

Now cos Ф= -3/5=-base/hypotenuse

so base=3 and hypotenuse=5

height=√(5²-3²)

=√(25-9)=√16=4

So sin Ф=-4/5, cosecФ=-5/4

tanФ=4/3, cotФ=3/4

cos Ф=-3/5 ,sec Ф=-5/3