Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 5 - No. 12)
Which of the following statements is/are correct?
The hypotenuse is always the longest side in a right-angled triangle.
The area of a triangle is calculated using ½ * base * height
The inverse function of sine is sin-1.
The total angle in a right-angled triangle is 145°
解释
All options are correct except the fourth one