Welcome :: Homework Help and Answers :: Mathskey.com

Q&A
Unanswered
Categories
Users
Ask a Question

Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

Q&A Categories
BASIC MATH (93)
PRE-ALGEBRA (441)
ALGEBRA 1 (2,220)
GEOMETRY (864)
ALGEBRA 2 (2,751)
TRIGONOMETRY (1,187)
PRECALCULUS (1,903)
CALCULUS (2,802)
STATISTICS (129)
PHYSICS (659)
CHEMISTRY (137)
MECHANICAL ENGINEERING (64)
ELECTRICAL ENGINEERING (207)
Winplot Tutorials (2)

Most popular tags

solving-equations system-of-equations functions math slope-intercept-form physics homework-help trigonometric-identities integration limits substitution-method calculus

13,459 questions

17,854 answers

1,446 comments

811,077 users

What is tan(A+B) if sin(A)=-4/5 cos(B)=-5/13

0 votes

What is tan(A+B) if sin(A)=-4/5 cos(B)=-5/13

270<A<360
90<B<180

trigonometric-functions

asked Oct 26, 2017 in TRIGONOMETRY by anonymous

Share this question

Google+ Facebook Twitter LinkedIn Reddit

Please log in or register to add a comment.

Please log in or register to answer this question.

Related questions

What is tan(A+B) if sin(A)=-4/5 cos(B)=-5/13

asked Oct 26, 2017 in TRIGONOMETRY by anonymous

trigonometric-functions

If tan(b)=-12/5 and angle b is in quadrant 4 Find the following Sin, Cos, Cot?

asked Sep 30, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

If cos(A + B) = 4/5 and sin(A - B) = 5/13 and A,B lies between 0 and pi/4

asked Jun 24, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

if sin (A) = 5/13 with 90° < A < 180° and cos(B) = 5/13 with 270° < B < 360°?

asked Jul 17, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

If sin ( θ ) = − 4/7 , and θ is in quadrant III , then find cos tan sec csc cot

asked Apr 29, 2019 in PRECALCULUS by anonymous

trigonometric-functions

If cos A = 12/13 , cosB = 3/5 , cos C = 63 / 65 and A, B, C are positive acute angles,

asked Jul 12, 2014 in ALGEBRA 2 by anonymous

trigonometric-functions

Sin x = 12/13; x is in Quad 2. Find exact values of sin x/2, cos x/2, tan x/2. Use Half Angle Identities.

asked May 3, 2017 in PRECALCULUS by anonymous

half-angle-trigonometric-formulas
trigonometric-functions
exact-value

If tan(a+b)=1/3 &tan(a-b)=2/5 then

asked Nov 20, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

Find tan(t) ,sin(t) when cos(t)= -3/5

asked Jun 20, 2013 in TRIGONOMETRY by skylar Apprentice

trigonometric-functions

Use the figures to evaluate the function if f (x) = sin x, g (x) = cos x, and h (x) = tan x.

asked Jan 27, 2015 in PRECALCULUS by anonymous

trigonometric-functions
exact-value

For tan =4/5 and sin = -4/sqrt41

asked Oct 26, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

Suppose sin ß=(1/3) where (π/2) <= ß<=π and cos ø =(4/5) where ((3π)/2)<=ø<=2π?

asked Aug 22, 2015 in TRIGONOMETRY by anonymous

trigonometric-functions
composite-angles

prove that 16 tan(A+B)=63 if 7sinA - 9cosA =9sinB -7 scos B

asked Feb 27, 2019 in TRIGONOMETRY by anonymous

trigonometric-functions

If Tan A=a/(a+1) and Tan B=1/(2a+1),

asked Jun 26, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

Given cos(x)=11/14, find sin(2x), cos(2x), and tan(2x)

asked May 24, 2017 in TRIGONOMETRY by anonymous

double
angle
double-angle-identities
trigonometric-functions

Find sin 2x, cos 2x, and tan 2x from the given information.

asked Nov 17, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

If cos (A + B) / cos (A - B) = cos 2C ,

asked Jul 12, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

If a+b+c=pi find cos(a+b)+cos c.. how to do this ?

asked May 22, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

If sin(theta) = -4/5.

asked Jun 24, 2014 in TRIGONOMETRY by anonymous

trigonometric-functions

if sinx=7/5 and angle x is in quadrant 2 and cos y=12/13 and angle y is in quadrant 1 find sin (x+y)

asked Nov 26, 2013 in TRIGONOMETRY by harvy0496 Apprentice

double-angle
half-angle-identity

Copyright © 2024 MATHSKEY. All Rights Reserved. Sitemap|Terms Of Use|Disclaimer|Contact Us|FAQ

...