Tuesday

July 29, 2014

July 29, 2014

Posted by **John** on Thursday, October 4, 2012 at 11:08am.

5√3 secθ = 10 in degree measure?

please explain.

- Trigonometry -
**Reiny**, Thursday, October 4, 2012 at 11:20amsecØ = 10/5√3 = 2/√3

then

cosØ = √3/2

You should be familiar with the 1 : √3 : 2 right-angled triangle which has angles of 30:60:90

thus Ø = 30°

but the cosine is also positive in the fourth quadrant

so Ø could be 330°

Ø = 30° or Ø = 330°

**Related Questions**

Pre-Calculus - If θ represents an angle such that sin2θ = tanθ - ...

trigonometry help please :( - 2) Simplify √-1-4/5-√-1 A.-1/24+19/24i...

Math - Trig Substitution - How can I solve the integral of x^3√(9-x^2) dx ...

Trigonometry - Could someone please help me with the following q's I'm having ...

trigonometry - 4.if cotθ = -√15/7 , use the fundamental identities ...

Trigonometry - 1.Solve tan^2x + tan x – 1 = 0 for the principal value(s) to two ...

trig - An object Is propelled upward at an angle θ, 45° < θ<90...

Math (Trigonometry) - θ is an acute angle such that tan(θ)=1/4. What ...

Math (Trigonometry) - θ is an acute angle such that tan(θ) = 12. What ...

Trigonometry - There are four complex fourth roots to the number 4−4√...