The number of right angles and acute angles in a right-angled triangle is ______ and ______, respectively.
If A and B are acute angles of a right angled triangle and sinA = cosB, then
If in a right-angled triangle ABC angles A and B are acute, then evaluate
1 + tanAtanB =
If A, B and C are the interior angles of a right-angle triangle, right-angled at B then find the value of A, given that tan2A=cot(A–30∘) and 2A is an acute angle.