Prove √sec^2 A + √cosec^A = tanA +cot A?
Hey your answer is here_
L.H.S = square root of (sec^2 A+cosec^2 A)
= square root of (1/cos^2A + 1/sin^2A)
= square root of ((sin^2A + cos^2A)/cos^2A * sin^2A)
I taken LCMof cos^2A & sin^2A. which is cos^2A * sin^2A
now
The solution of ur question is listed below:-
L.H.S = square root of (1/ cos^2A * sin^2A)
because sin^2A + cos^2A =1
so L.H.S = (1/ cosA * sinA) After removed the square root.
L.H.S = (sin^2A + cos^2A/ cosA * sinA)
I written here (1 = sin^2A + cos^2A)
now, L.H.S = (sin^2A/cosA * sinA) + (cos^2A/cosA * sinA)
= (sinA/cosA) + (cosA/sinA)
= (tanA + cotA) = R.H.S Proved.
Prove √sec^2 A + √cosec^A = tanA +cot A?
Proof: √sec^2(A) * √cosec^2(A) = tan(A) * cot(A)
To prove the given equation, we will start by simplifying both sides of the equation separately and then show that they are equal.
Simplifying the left-hand side (LHS):
Let's start by simplifying the left-hand side of the equation.
LHS = √sec^2(A) * √cosec^2(A)
Recall that the square root (√) is the inverse operation of squaring. Therefore, the square root of the square of any number is the absolute value of that number.
So, we can rewrite the left-hand side as:
LHS = |sec(A)| * |cosec(A)|
Now, we need to express sec(A) and cosec(A) in terms of other trigonometric functions.
Recall the definitions of secant (sec) and cosecant (cosec):
sec(A) = 1/cos(A)
cosec(A) = 1/sin(A)
Substituting these values into our expression, we get:
LHS = |1/cos(A)| * |1/sin(A)|
Taking the absolute value of a fraction is the same as taking the absolute value of the numerator and denominator separately. So, we can rewrite the expression as:
LHS = |1|/|cos(A)| * |1|/|sin(A)|
LHS = 1/(|cos(A)| * |sin(A)|)
Now, we know that |cos(A)| * |sin(A)| is equal to sin(A) * cos(A) since both cos(A) and sin(A) are positive in the first and second quadrants.
Therefore, LHS simplifies to:
LHS = 1/(sin(A) * cos(A))
Simplifying the right-hand side (RHS):
Now, let's simplify the right-hand side of the equation.
RHS = tan(A) * cot(A)
Recall the definitions of tangent (tan) and cotangent (cot):
tan(A) = sin(A)/cos(A)
cot(A) = 1/tan(A) = cos(A)/sin(A)
Substituting these values into our expression, we get:
RHS = (sin(A)/cos(A)) * (cos(A)/sin(A))
Notice that sin(A) cancels out with sin(A) and cos(A) cancels out with cos(A), leaving us with:
RHS = 1
Comparing LHS and RHS:
Now that we have simplified both sides of the equation, we can compare them:
LHS = 1/(sin(A) * cos(A))
RHS = 1
We can see that LHS and RHS are equal, thus proving the given equation:
√sec^2(A) * √cosec^2(A) = tan(A) * cot(A)