Given – sin + cseccθ = 2, let x = sin θ, then cosec θ =1/x ATQ- x+1/x =2 x²+1 = 2x x²-2x+1 0 (x-1)2 = 0 x-1 =0 x =1. Thus, sin θ = 1, which means θ = 90°. Now, Sin 2 θ = 15=1 Similarly, Cosec2 θ = 1 Therefore, Sin 2 θ + Cosec2 θ =1+1=2 So, the value is 2.
Which Instrument is used to measure depth of ocean?
The instrument which uses sound waves to measure the depth of oceans is –
What is the work done by a force when the angle θ is 90 degrees?
The waves which are less than 20Hz are known as
The method of transfer of heat in liquid is
What is the pH of Urine ?
Which of the following is/are NOT scalar quantities?
How much calorie of energy is released by a boiled egg?
During __________ motion of an object along a straight line, the change in velocity of the object for any time interval is zero.
How does an earphone convert electrical signals into sound?
