Question
If tan 4θ = cot 14θ, then find the value of cos 9θ.
Solution
tan 4θ = cot 14θ
Or, tan 4θ = cot (90o - 4θ) [because, tan A = cot (90o - A) ]
Or, 14θ = 90o - 4θ
Or, 18θ = 90o
Or, θ = (90/18) o = 5o
So, cos 9θ = cos 45o = (1/√2)
Mycoplasma cell membranes are characterized by:
Which of the following e-commerce initiatives is specifically designed for rural markets in India?
What is the function of the peritrophic membrane in the insect midgut?
To break the dormancy of seed, a process of scratching, or mechanically altering the seed coat to make it permeable to water and gases is done. It is kn...
Which term describes the process where water vapour is released from plant leaves into the atmosphere?
Post harvest treatment used in Cut flowers to prevent the spoilage by removing field heat is ___
Which of the following is nematicide:
Pick out the wrong statement.
Apical dominance is primarily due to
Which year witnessed the launch of the liquid 'Nano Urea' by the Indian Farmers' Fertiliser Cooperative (IFFCO)?
Relevant for Exams:
