Question

Any triangle with sides a, b, c, if $a^2+b^2=c^2$,then the angle between a and b measures.

• A. ${180}^o$
• B. ${100}^o$
• C. ${170}^o$
• D. ${90}^o$

Answer 1

The correct option is D ${90}^o$

If $a^2+b^2=c^2$, c is the hypotenuse and angle opposite to the hypotenuse is a right angle in Pythagoras theorem which lies between a and b and measure of right angle is ${90}^o$.
Therefore, D is the correct answer.