Skip to content

Course home

11.3 Using Trigonometric Identities

11.3 Using Trigonometric Identities

Medium
12345678910111213141516171819202122232425262728293031
Question 25

The instantaneous power output P(t)P(t)P(t) of a specific alternating current component, measured in Watts, is modeled by the function:

P(t)=(3sin⁡2t+5cos⁡2t)2 P(t) = (3\sin 2t + 5\cos 2t)^2 P(t)=(3sin2t+5cos2t)2

where ttt is the time in seconds. The total energy E(t)E(t)E(t) transferred by the component is given by E(t)=∫P(t) dtE(t) = \int P(t) \, dtE(t)=∫P(t)dt.

Determine the general expression for E(t)E(t)E(t) in its simplest form.

[6]
Markscheme

11.3 Using Trigonometric Identities Questions

  1. A Level
  2. /Maths
  3. /11.3 Using Trigonometric Identities

31 exam-style questions on Edexcel A Level Maths 11.3 Using Trigonometric Identities. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank