Sunday

January 25, 2015

January 25, 2015

Posted by **Anonymous** on Tuesday, January 31, 2012 at 10:05pm.

- trig -
**Anonymous**, Tuesday, January 31, 2012 at 10:19pmIn a graphic calculator punch in cos(7/4) and should give you the right answer

subtract it from sin(0/3)

and tada!

- trig -
**Anonymous**, Tuesday, January 31, 2012 at 10:34pmthe weird symbol is suppose to be pi (3.14...) not a zero. it got messed up after submitting the question

- trig -
**Anonymous**, Tuesday, January 31, 2012 at 10:35pmneed to show my work

- trig -
**Reiny**, Wednesday, February 1, 2012 at 8:31am4cos(7π/4)-2sin(π/3)

= 4 cos (π/4) - 2 sin(π/3)

= 4(√2/2) - 2(√3/2)

= (4√2 - 2√3)/2

**Answer this Question**

**Related Questions**

Trignometry - How can I find the exact value of 4cos(7ð/4)-2sin(ð/3) without ...

trig - 2sin(x)cos(x)+cos(x)=0 I'm looking for exact value solutions in [0, 3&#...

Math - 1. Find the exact value of 2tan pi/12 / 1-tan^2 pi/12 root 3/3? 2. Given ...

trig - 1. 3cot^2 (x) - 1 = 0 My answer: pi/3, 2pi/3, 4pi/3, 5pi/3 2. 4cos^2 (x...

trig - prove that the equation 2sin x cos x +4cos^2 x =1 may be written in the ...

math - Sin(2x)=2sin(x)cos(x) find the exact value in radians with 2sin^2(x)+sin^...

math - Sin(2x)=2sin(x)cos(x) find the exact value in radians with 2sin^2(x)+sin^...

Trig - If sinx = 1/4 Find the exact value of cos2x I used the formula for double...

Trig - what is the amplitude, period, phase shift, and vertical shift of each ...

Math - Solving Trig Equations - What am I doing wrong? Equation: sin2x = 2cos2x ...