Prove that: 1- tan35°.tan10° = tan35° + tan10°
 Answer:

So, when you glare the question once, you and send the LHS to divide the RHS by taking 1 common on the LHS, then you will observe that you get the formula of tan(A+B) on the right side. But, now it's about what are the angles and is it a sum formula or difference formula of compound angles?

Let's observe once!
We have, 35° and 10° and we need 1 on the left hand side. We know tan45°= 1, so, we need to put the sum formula and we will get 45° on the left and 35°+10° on the right and when we apply the respective formulas and solve the question ,we will get the answer!

Have a look at these formulas that may be a great help for you while solving these types of questions!


So, now you are all ready to solve such Trigonometric questions in Trigonometry of Mathematics.

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