Question #c44b0
2 Answers
Start by using
#1/(sinA/cosA + cosA/sinA) = sinAcosA#
#1/((sin^2A+cos^2A)/(cosAsinA)) = sinAcosA#
Now use
#cosAsinA = sinAcosA#
Hopefully this helps!
On verifies an equation of this type by using identities and axioms to change only one side until it is identical to the other side.
Explanation:
Verify:
Substitute
Make a common denominator for the fractions of the denominator:
Perform the multiplication:
Combine the numerators:
Substitute
Division by a fraction is the same as multiplication by the reciprocal of the divisor: