Question

Question 5 Find the values of other five trigonometric functions if tan x = -5/12 , x lies in second quadrant.

Class X1 - Maths -Trigonometric Functions Page 63

Answer 1

Tanx = -5/12 , where x lies in 2nd quadrant.

In 2nd quadrant :- sinx, cosecx are positive . all rest are negative.

tanx = -5/12 =P/b
h = √(5² + 12²) = ±13

cotx = 1/tanx = -12/5

sinx = P/h = 5/13
Cosecx = 13/5

Cosx = b/h = -12/13
Secx = 1/cosx = 13/12