# Angle between two chords

# Problem 01 - Equation of a curve

# 02 - Bullet fired from the top of a building

Log in or Register to Discuss This!

**Problem 02**

A bullet is fired at an initial velocity of 150 m/s and an angle of 56° at the top of a 120 m tall building. Neglecting air resistance, determine the following:

- The maximum height above the level ground that can be reached by the bullet.
- The time for the bullet to hit the ground.
- The velocity with which the bullet will hit the ground.

# The Moment Distribution Method

Log in or Register to Discuss This!

Moment distribution is based on the method of successive approximation developed by Hardy Cross (1885–1959) in his stay at the University of Illinois at Urbana-Champaign (UIUC). This method is applicable to all types of rigid frame analysis.

# Cycloid: equation, length of arc, area

# 821 Rectangle minus semi-circle | Moment of Inertia

# 01 Maximum area of triangle of given perimeter

# Partial Derivatives

Log in or Register to Discuss This!

Let F be a function of several variables, say x, y, and z. In symbols,

$F = f(x, \, y, \, z)$.

The partial derivative of F with respect to x is denoted by

$\dfrac{\partial F}{\partial x}$

and can be found by differentiating f(x, y, z) in terms of x and treating the variables y and z as constants.