Tuesday

September 23, 2014

September 23, 2014

Posted by **Janet** on Monday, May 9, 2011 at 11:39pm.

I'll use the S as the sign for integral

S 4 sin (theta)d(theta) from pi/2 to pi

I know the answer is 4 because I enter it in on my calculator, but don't know the steps to get to the answer.

Please help.

- Calculus -
**drwls**, Monday, May 9, 2011 at 11:55pmThe steps are:

(1) compute the indefinite integral.

in this case it is -4 cos theta

(2) Compute the value of the indefinite integral at theta = pi and subtract the value at theta = pi/2.

That would be -4(-1) -0 = 4

You won't learn integral calculus without learning how to compute integrals.

**Answer this Question**

**Related Questions**

calculus - 1. integral -oo, oo [(2x)/(x^2+1)^2] dx 2. integral 0, pi/2 cot(theta...

calculus - Use Fundemental Theorem of Calculus part 1 to find the derivatives of...

Calculus - Below are the 5 problems which I had trouble in. I can't seem to get ...

Calculus - I wanted to confirm that I solved these problems correctly (we had to...

Maths- complex numbers - Find tan(3 theta) in terms of tan theta Use the formula...

Integral - That's the same as the integral of sin^2 x dx. Use integration by ...

Calculus - Evaluate, in spherical coordinates, the triple integral of f(rho,...

Calculus :) - Use the substitution x=2tan(theta) to evaluate the indefinite ...

Pre Cal - sin theta - 2sin^2 theta = 0 I'm using the up carrot sign to signal "...

Calculus - Evaluate the integral. S= integral sign I= absolute value S ((cos x...