From the trigonometry:
tan θ = (sin θ) / (cos θ)
cot θ = (cos θ) / (sin θ)
∴ tan θ + cot θ = (sin θ) / (cos θ) + (cos θ) / (sin θ)
= [ sin² θ + cos² θ]/( sin θ cos θ) = 1 /( sin θ cos θ )
note : sin² θ + cos² θ = 1
please explain what question you are talking about since there is 6 questions on the paper.
Answer:
What is the question or only
Step-by-step explanation:
11 ÷ 20 = 0.55
0.55 × 100 = 55
so 55%
For the lines to be parallel, the slope must be the same
(y2 - y1) / (x2 - x1) = slope
(7- (-3)) / (b-2) = -2
-2 (b-2) = 10
-2b + 4 = 10
-2b = 6
b = -3
