Question

tan theta. tan(90-theta) =1

Answer 1

Hey friend

Solution is as follows-:

=>Tan theta . Tan(90-theta)=1
=>Tan theta . Cot theta=1
=>Tan theta . 1/Tan theta=1
=> 1=1

As. L.H.S.= R.H.S. Hence proved.


Be perfectionist

Answer 2

$tan \: theta \times tan(90 - theta) \\ tan \: theta \times cot \: theta \\ \frac{1}{cot \: theta} \times cot \: theta = 1$