Which trigonometric function is positive in third quadrant,
Find the values of the other five trigonometric functions in each of the following:
(i)cosθ=125,θ in quadrant III
(ii)cosθ=−12,θ in quadrant II
(iii)tanθ=34,θ in quadrant III
(iv)sinθ=35,θ in quadrant I
Some trigonometric ratios and the interval in which θ lies is given. Match the intervals with the ratios which are positive in those intervals.
θ gives positive values
p. (0, π2) 1. Only sin θ, cosecθ
q. (π2, π) 2. Only cosθ, secθ
r. (π,3π2) 3. Only tanθ, cotθ
s. (3π2,2π) 4. All sinθ, cosθ, tanθ, cotθ, secθ, cosecθ