math

posted by .

In triangle ABC if <A and <B are acute angles and sin 10/13 , what is the value of cos A?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. maths

    Choose three options which are true: a) an angle of 150 degrees is equivalent to 2pie/3 radians. b) Cos 0 = cos (0 – pie/2) for al values of 0. c) Sin 0 = cos (0 – pie/2) for all values of 0. d) If triangle ABC has a right angle …
  2. maths

    Choose three options which are true: a) an angle of 150 degrees is equivalent to 2pie/3 radians. b) Cos 0 = cos (0 – pie/2) for al values of 0. c) Sin 0 = cos (0 – pie/2) for all values of 0. d) If triangle ABC has a right angle …
  3. Trigonometry

    in triangle abc, if sin c= (sin a + sin b )/ ( cos a + cos b ) prove that triangle abc is a right-angle triangle.
  4. math

    In triangle ABC if <A and <B are acute angles and sin 10/13 , what is the value of cos A?
  5. Algebra 1

    In triangle ABC ,if <A and <B are acute angles, and sin A=10/13 what is the value of cos A?
  6. math

    In triangle ABC ,if <A and <B are acute angles, and sin A=10/13 what is the value of cos A
  7. geometry

    In triangle ABC, if <A and <B are acute angles, and sin A 10/13 . What is the value of cos A?
  8. Geometry One multiple choice question!

    Write the ratios for sin A and cos A. {picture is of a right triangle, ABC. segment AC is 8, segment AB is 17, and segment CB is 15.} sin A=15/17, cos A=8/17 sin A=15/8, cos A=8/17 sin A=15/17, cos A=8/15 sin A=8/17, cos A=15/17
  9. Geometry Please Help With One Multiple Choice

    Write the ratios for sin A and cos A. {picture is of a right triangle, ABC. segment AC is 8, segment AB is 17, and segment CB is 15.} sin A=15/17, cos A=8/17 sin A=15/8, cos A=8/17 sin A=15/17, cos A=8/15 sin A=8/17, cos A=15/17
  10. geometry

    Let the incircle of triangle $ABC$ be tangent to sides $\overline{BC}$, $\overline{AC}$, and $\overline{AB}$ at $D$, $E$, and $F$, respectively. Prove that triangle $DEF$ is acute. I have tried proving that triangle DEF's angles were …

More Similar Questions