Question

if cos thita = - 3 by 5 and 180 degree < thita < 270 degree find other trigonometric functions
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Answer 1

Answer:

cos = -3/5

condition : π < angle <3π/2

angle is lie in 3quadrant so except tan and cot all

will negative.

sin = √1-cos² = √1- 9/25 = √16/25 = -4/5

tan= sin/cos = -3/5 / -4/5 = 3/4

cot= 1/tan = 4/3

cosec= 1/sin= -5/4

sec= 1/cos = -5/3