Math sin/cos

On a piece of paper draw and label a right triangle using the given sides, solve for the unknown side and write the trigonometric functions for angles A and B, if a=5 and c=7.

I already found side b which equals 2 sqrts of 6.
Now I need to find the sin A and cos A. I know that sin is opposite/hypotenuse and cos is adjacent / hypotenuse. That’s as far as I can get however, I am provided with choices;

Sin A
a)7/5
b)2sqrt6/7
c)7/2sqrt6
d)5/7

Cos A

a)7/5
b)7/2sqrt6
c)2sqrt6/7
d)5/7

Please help!!!


So why not use for sine the value of a/c, and for cosine, b/c ?

  1. 👍 0
  2. 👎 0
  3. 👁 104

Respond to this Question

First Name

Your Response

Similar Questions

  1. Precalc/Triangles

    Draw and solve any triangles satisfying alpha = 29 degrees a = 7 c = 14 I realize I need to draw a non-right triangle and label the sides but I am completely confused one what to do after I draw the triangle

    asked by Greg on November 13, 2012
  2. Vectors and matrices

    A triangle T has a vortices (3,-1),(5,-1) and (5,-4).draw and label the traingle T. M is the matrix (1 0) ( 0 -1). The triangle T is mapped on triangle T by the means of transformations M,draw and label T on your diagram. T has a

    asked by Vanessa on November 29, 2016
  3. Inverse trigonometric function

    How to solve without calculator 1. sin(arctan(12/5)) 2. cos(arccosx + arcsinx) Thanks. You have to know your right triangles. 5 12 13 is one. If the tan is 12/5, then the sin is 5/13. Draw a pic to confirm that. On the second:

    asked by Jen on April 8, 2007
  4. Geometry

    Draw a Right Triangle Part 1 Using graph paper draw a right triangle given the following coordinates. A(1,7) B(1,-1) C(7,-1) (i got the triangle from this) Part 2 Now, on the same graph paper using the same axes, translate (slide)

    asked by Anonymous on September 6, 2017
  5. Evaluation-repost

    Reposting because it has gone down to the second page! Evaluate 1. sin(tan inverse sqrt(x^2-2x)) 2. tan (sec inverse 3y) For 1. draw a right triangle and label the opposite leg sqrt(x^2-2x), the adjacent side 1 and the hypotenuse

    asked by Jen on October 23, 2006
  6. Math

    How do I figure out this question? Is there a formula I need? For which of the following sets of line segments is it possible to consturct a triangle? 1. Sides of length 17cm, 18 cm,and19 cm 2. Sides of length 11m, 18m, and 6 m 3.

    asked by Priscilla on May 15, 2007
  7. math

    Given a hexagon $ABCDEF$ inscribed in a circle with $AB = BC, CD = DE, EF = FA$, show that $\overline{AD}, \overline{BE}$, and $\overline{CF}$ are concurrent. [asy] unitsize(2 cm); pair A, B, C, D, E, F, G; A = dir(85); B =

    asked by Dillion on October 6, 2019
  8. Math: Geometry

    The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. We are given that $CD = 8$, $AD = BC = 7$, and $BD = 9$. Find the area of the trapezoid. [asy] unitsize(1 cm); pair A, B, C, D; A = (1,2); B = (3,2); C =

    asked by I see you have graph paper. You must be plotting something. on November 19, 2015
  9. Math sin/cos

    On a piece of paper draw and label a right triangle using the given sides, solve for the unknown side and write the trigonometric functions for angles A and B, if a=5 and c=7. I already found side b which equals 2 sqrts of 6. Now

    asked by Anonymous on March 10, 2007
  10. Functions (Math)

    The point P(2, -5) is located on the terminal arm of an angle θ in standard position. a) Draw and label an appropriate diagram. Remember to label θ and all the sides of the triangle. b) Determine the exact values of the primary

    asked by Shaun on April 24, 2017

More Similar Questions