# Trigonometry

find (acute) angle A, given:
a. sin A = 0.4919
b. tan A = 2.7775
c. cos A = 0.5757

1. 👍 0
2. 👎 0
3. 👁 34
asked by Matrix 10
1. I will be happy to check your answers, you have to punch these into your calc.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Math

How does the related acute angle help to determine the trigonometric ratios of angles greater than 90 degrees? (in terms of the Cartesian plane) And why is the sin, cos, and tan of the principal angle equal to the sin, cos, and

asked by Crystal on November 24, 2012
2. ### Math

1. Write the expression as a function of an acute angle whose measure is less than 45. a. sin 80 b. sin (-100) To find the postive acute angle, usually you would subtract 360 from the given measure. Would you have to subtract 45

asked by Priscilla on February 16, 2010
3. ### physics

In Physics, it is important to use mathemat- ical approximations. For instance, in a small angle approximation, tan α ∼ sin α . Find the largest angle α for which the dif- ference of sin α − tan α is less than 3.52% of

asked by ryan on June 28, 2011
4. ### Calculus

If θ is an acute angle and tan(θ)=5/12, then sin(θ)=??

asked by Kevin on August 28, 2016
5. ### trig help much appreciated! :))

1. Find the complete exact solution of sin x = . 2. Solve cos 2x – 3sin x cos 2x = 0 for the principal value(s) to two decimal places. 3. Solve tan2 x + tan x – 1 = 0 for the principal value(s) to two decimal places. 4. Prove

asked by suzy on August 16, 2013
6. ### maths

another question ? A is an acute angle and sin A=3/5 calculate the value of tan A ??

asked by Amy on February 8, 2010
7. ### trig

if x and y are positive acute angles, tan x=1/3and tan y =1/4, find the value of sin(x-y)

asked by Anonymous on May 25, 2011
8. ### Trigonometry Help please

1.If tan theta=3/4 and theta is an acute angle, find cos theta. 2.If sin theta=12/13 and theta is an acute angle, find cot theta.

asked by Ryan on February 12, 2016
9. ### Trig

Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < 2pi Find: sin (v + u) cos (v - u) tan (v + u) First compute or list the cosine and sine of both u and v. Then use the combination rules sin (v + u) = sin u cos v + cos v

asked by Nan on December 29, 2006
10. ### precalculus

For the acute angle with sin theta=3/5, find cos theta, tan, cot, csc, sec.

asked by tina on December 3, 2009

More Similar Questions