March 26, 2017

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Number of results: 132,238

plane and spherical trigonometry
trigonometry in oblique triangles
August 3, 2014 by keicer

High School Courses
How often do state colleges which are moderately competitive require trigonometry? Is trigonometry something like algebra that they expect you to have, or do they usually not care as long as you have the right number of math courses? Would it look better for me to take ...
March 31, 2009 by Evelyn

Math (trigonometry)
Trigonometry identities are so hard... I need some help proving these identities: *Oh, and I'm only in grade 11, so the identities we use are quotient identity and Pythagorean identity. sinx/(sinx + cosx) = tanx/(1 + tanx) cos^2x - sin^2x = 2cos^2x - 1 Thanks! Lucy
April 13, 2008 by Lucy

If x+y=45°, prove that {(cotx+1)(coty+1)}/{cotx×coty}=2 Please help me in this TRIGONOMETRY problem. From the topic - TRIGONOMETRY Ratios of compound angles
October 26, 2016 by A GOODSTUDENT

Replace with or replace for? Sentence: I want to replace algebra (with/for) trigonometry. If I use the word with, then does that's an I want trigonometry and not algebra? If I use the word for, then does that mean I want algebra and not trigonometry? Any rules?
August 29, 2013 by Anonymous

is this translated right? In the morning I wake up at 8:30 a.m. The first thing I do is brush my teeth and comb my hair. Then I eat breakfast. By 9:00 a.m., I start my schooling (home). The first thing I work on is trigonometry. Then I do English, Trigonometry, American ...
May 3, 2009 by y912f

determine the trend of each linear function: 1. f(x)= 3x+5 I don't know what you call the "trend" or why you call this a trigonometry question. It is about algebra. The value of the function increases with x at a rate of three times the change in x.
July 10, 2007 by hugh

a 20ft. ladder is leaning against a wall so that the foot of the ladder is 9ft. from the buss of the wall what angle does the ladder make with the ground? what is the distance from the top of the ladder to the base of the house? based in trigonometry
November 21, 2015 by Ara Jane

okay so i have this trigonometry problem were i HAVE to use logarithms. Now this is my work but can u help me solve it using logarithms. Find the area of the following triangles:(use logarithms) 1) c=426, A=45degrees 48' 36",and B=61degrees 2' 13"
February 20, 2011 by anon

PLEASE HELP!! I really don't understand this...I just started learning about trigonometry and SOH CAH TOA and I think this probably has to do with that but I don't know how to apply it... Please explain this to me!!!! I need to know how to do it and not just the answer. ...
March 30, 2016 by Becca

what does trigonometry mean?
March 3, 2008 by shelbie

what does trigonometry mean?
March 3, 2008 by lizbet

Is there a formula for sin(x/3)?
December 11, 2008 by Anonymous

Solve for x to the nearest hundreth and can you explain how you get your answer I don't understand 3^x = 1.295 Your question has nothing to do with trigonometry. You can solve for x by taking the logarithm (to any base) of both sides of the equation. Then x log 3 = log 1.295 x...
June 10, 2007 by Linda

Math - Trigonometry
Math - Find the amplitude, period, phase shift - y=cosPi/2 (x+1/3)
February 1, 2010 by Aaron

Math - Trigonometry
What is the answer to (sin45) / (cos45)?
April 16, 2008 by Lucy

need help with 20 question for algebra and trigonometry
June 8, 2012 by Anonymous

How do I find the degree for a right triangle trigonometry??
February 10, 2009 by Jeananne

solve this equation by completing the square. x^2+4x-21=0
May 23, 2010 by Sally

Math trigonometry
Prove sinA/1+cosA =tan1/2A
January 24, 2013 by Riley

y=−34 sin(10θ+10π)−14 I need to graph this trigonometry problem. I need the parent graph, period, vertical shift, phase shift, a separate graph showing the new mid line with the amplitude and a final product graph. thanks for any help :)
November 18, 2015 by khloe

A balloon is flying west of two trigonometry students who are 7 miles apart. The angles of elevation of the two students to the balloon are 15 and 28 degrees. Approximate how high the balloon is flying.
November 3, 2014 by Bailey

Math (Trigonometry)
square root(a^2 -u^2) where a>0, let u=(a sinx) where -pi/2<x<pi/2 answer is (a cosx) and I don't know how to get there
April 9, 2008 by mtd

Convert 2pi/3 radians into degrees.
January 12, 2011 by CJ

In Quadrant II, is the value of cosecant positive or negative?
July 23, 2012 by Anonymous

how do i state the law of sines and cosin in words ??
January 13, 2015 by Anonymous

I'm trying to decide what math course to take next year. How do Statistics and Trigonometry compare in difficulty? Which is more helpful for the SAT's? THank you for your explanations.
April 2, 2009 by Krissa

how do u draw a triangle on here cuz i need help on my math hw and i dunno how
May 25, 2007 by anonymous

Math - Trigonometry
Find the amplitude, period, and phase shift - y=cosð/2 (x+1/3)
February 1, 2010 by Aaron

Math (trigonometry)
Find the value of each of the remaining trig functions. Cscè=-4, ð<è<3ð/2
April 12, 2010 by Anonymous

What is the angular displacement of 1.6 revolutions? Round to the nearest tenth.
January 14, 2011 by CJ

Trigonometry - determine the area of a parallelogram in which 2 sides are 10 and 13 and the angle between them is 55
August 7, 2013 by sue

Math - Trigonometry
I need help proving this identity 2sin^2x - 1 = sin^2x - cos^2x
May 2, 2015 by Anonymous

math trigonometry
Simplify cos180*sin225*cos80/sin170*tan135
June 10, 2015 by kem

Math (Trigonometry)
Find csc B when a - 2 and b = 7 (A detailed answer would be really helpful)
September 9, 2009 by Aerith

Math - Trigonometry
Sketch the curve represented by the parametric equations x=3cos¦È and y=3sin¦È for 0 ¡Ü ¦È ¡Ü ¦Ð?
July 24, 2012 by Anonymous

math trigonometry
Prove the identity Sin^3X sinx*cos^2X=tanx/cosX
June 9, 2015 by happy

math trigonometry
Prove the identity Sin^3X+sinx*cos^2X=tanx/cosX
June 9, 2015 by happy

Math Trigonometry
determine the amplitude and period of each function. 1) y = 3sin (2x-pi/2) 2) y = -3sin2 (x-pi/4) 3) y = 2cos (2x+pi) 4) y = -2cos2 (x+pi/2)
August 5, 2011 by Janine

Math Trigonometry
A man is 6 ft. tall casts a shadow of 8 ft. find the angle of elevation of the sun.
June 18, 2015 by Shelou

math / geometry
connections academy, trigonometry practice unit for lesson three answers
March 10, 2016 by SarMerr

I really need help with this trigonometry question.please any help is appreciated. 1.I have to draw the graph of y=cos x from 0deg to 360deg. 2.Be sure to show a table of vales similar to the this table. colum X l colum :y=sinx 0 l 0.00 pi/10 l 0.31 pi/5 l 0.59 3pi/10 l 0.81 ...
March 7, 2011 by anon

solve secx/2=cosx/2 over the interval[0,2pi) without using a calculator
April 14, 2008 by jake

math(advanced algebra&trigonometry)
find, to the nearest minute, the angle whose measure is 3.45 radians.
March 27, 2010 by Rony

Math trigonometry
Find the measures of the acute angles of a right triangle whose legs are 9 cm and 16 cm long.
March 16, 2013 by Kaitlyn

Maths trigonometry
using basic trigonometry derive the following equations, which are used to convert cartesian to polar coordinates and vice versa. why is the cos(phi)in the x term? x = R cos (phi) sin (lamda) y = R sin (phi) they are used in orthogonal projection of a spherical surface to a ...
October 16, 2011 by forest

what is the solution set (in terms of pi) of the equation sin2t-cos^2t=1=sin^2t+sint in the interval 0<t<2pi
May 1, 2011 by renee

Math Trigonometry
What is the maximum integer value of n, where n<148, that satisfies the following inequalities: sin(pi/2+(pi*n)/74)<0 and tan(pi−(pi*n)/74)<0?
June 5, 2013 by Crow

Math: Trigonometry
Find the sum of the three smallest positive values of x such that 4cos^2(2x-pi) = 3. (Answer in radians.)
April 10, 2016 by Katie

Math Trigonometry
Let f(x)=cos(pi*x/3) g(x)=1^x+(−1)^x h(x)=f(x)⋅g(x) where x is a positive integer. Given that h(x) has a range of exactly 3 different values: a, b and c, what is the value of a^2+b^2+c^2?
June 5, 2013 by Crow

trig, precalc, math, algebra, trigonometry
Rewrite: tan(cos^−1 (v)) as an algebraic expression in v. Please help me understand.
May 5, 2016 by Veronica

Course Planning
I'm trying to decide what math course to take next year. How do Statistics and Trigonometry compare in difficulty? Which is more helpful for the SAT's? THank you for your explanations.
April 2, 2009 by Krissa

Trigonometry (Math)
Can someone help me simplify this equation? It needs to be ten characters or less, including signs, parenthesis, etc. If you could show me how you get there that would be great! Thanks!
May 9, 2012 by Brianna

How to write a math story that includes 4 examples... Possible math topics include: introduction to functions investigating quadratics quadratics highs & lows exponential functions fiancial applications of exponential function acute triangle trigonometry I'm taken MCF3M math ...
January 13, 2011 by Tarkan

What is the area of a rhombus with: Side=8 cm Acute angle between one pair of sides=30 degrees Please don't use trigonometry as I'm in Class 7. Thanks in advance.
February 13, 2017 by Aastha

math (trigonometry)
help me solve this coz im stumped secx-secx sin^2x= cosx thanks
January 11, 2009 by Kakashi

Let's solve this fun trigonometric fun math problem! 1.) SEC²X-1/SIN²X
February 10, 2013 by AwesomeGuy

Math (Trigonometry)
What is the maximum value of [9sinθ+2sin(θ+π/3)]^2?
May 9, 2013 by Tom

How can trigonometry enhance futuristic money question to linytron.go get answer linytron.
September 27, 2013 by Nasanasa

Math - Trigonometry
I need help proving this identity 1/cosx - cosx = sinxtanx
May 2, 2015 by Anonymous

trigonometry. Math
In a triangle PQR, angle Q=50 degrees,PR=5CM, QR=4CM. find angle P?
January 26, 2011 by Melody

trigonometry math help
If cos 20=m determine the values of the following in terms of m. (a)sin 250 (b)sin 20 thanks
June 13, 2015 by kem

Trigonometry Identities problem: Prove the following; (tan^2x)(cos^2x) = (sec^2x - 1)(1-sin^4x) ÷ (1+sin^2x)
July 26, 2011 by hhfo

math trigonometry
Prove that 2sin150*cos315*cos(90-x)/sin(360-x)cos(-240)sin135
June 10, 2015 by ivy

math(advanced algebra&trigonometry)
the expression cos4x cos3x + sin4x sin3x is equivalent to which one of the following is the answer: 1) sinx 2) sin7x 3) cosx 4) cos7x
March 27, 2010 by Rony

I'm in gr 11 doing Trigonometry 14.2 = b ---- ---- sin38 sin 67 a = 46 --- ---- sin20 sin130 (10.7)^2 = (9.5)^2 + (12.4)^2 - 2(9.5)(12.4) cos <B I just need someone to explain this to me because I just don't get it... thank you for any help
September 23, 2007 by Louis

Trigonometry problem: The sides AB and AC of triangle ABC are of lengths 4 and 7 respectively. M is the midpoint of BC. AM is of length 3.5, Find the length of BC.
July 23, 2011 by Kalia

math- Trigonometry
If cos degree equals to 0.8641 What is Sin degree? I have no idea how to find this. Please help me. Thank you
November 4, 2016 by Simran

Math (Trigonometry)
In triangle ABC, we have AB = 16, BC = 29 and CA = √1097. What is the integer that is closest to 100 sin∠ABC?
May 7, 2013 by Tom

kos^2 theta - sin^2 theta = 0.25
February 2, 2013 by aaa

2cos^2 theta + 5 sin theta - 4 = 0
February 4, 2013 by aaa

math(advanced algebra&trigonometry)
If a is an angle in standard position and its terminal side passes through the point (-3,2), find the exact value of csc a. Answer: radical 13/2
April 3, 2010 by Rony

I'm working woith multiple ange and product sum formulas and I'm stuck on these. Can you help? Thanks sin2xsinx=cosx cos2x-cosx=0
January 11, 2011 by Michael

math and language arts
What is a sentence using the words abacus and trigonometry and hypotenuse i could use as a example? It much use definions.
September 2, 2011 by Stevie

Math 132 Trigonometry (College)
when the angle of elevation of the sun is 58 degrees. the shadow cast by a tree is 28 ft. long. how tall is the tree?
September 17, 2012 by Vata

Hello! I need assistance in solving for a side for a right triangle in trigonometry. Can anyone give me the easiest way/formula how to go about solving it? Thank you!
November 26, 2007 by Jenny Lynn

MATH trigonometry
in an isosceles triangle the vertex angle measures 90 degrees and the length of each congruent leg is 5√2. whats the length of the base?
February 10, 2010 by sara

Math- Trigonometry
The point, in on the terminal side of an angle in standard position find the exact value of the six trigonometric functions of the angle a. (8,15) b.(-9,-40)
May 20, 2012 by Laura

Thank you for using the Jiskha Homework Help Forum. Hopefully the following sites will help you: 1l 2. I get how to use soh-cah-toa and everything but could someone help me with how to plug it ...
May 22, 2007 by SraJMcGin

Use the half-angle formulas to find the exact values. Cosine 165 degrees, Sine 157 degrees 30' and tan pi/8
April 22, 2012 by Neicey

Math (trigonometry)
How do you solve this trig identity problem without factoring? I just used @ to represent theta: sin^4@ + 2sin^2@cos^2@ + cos^4@ = 1
November 27, 2012 by Sammy

Math - Trigonometry
A, B and C are three towns, the bearing of B and C from A being 295° and 205°, and their distances from A are 280km and 800km respectively. Find the bearing of C from B to the nearest minute.
March 17, 2017 by Anonymous

Math, trigonometry
how to evaluate sin (40)[1+sin(10)]
October 30, 2011 by Zaki

math trigonometry
if 5sin theta + 12cos theta is equal to 13 find the value of tan theta
June 15, 2013 by salina

respected sir i want to know the table describing the values of angles of trigonometry functions. eg. sin,cos & tan 15,30,45,60,75,90 separately in table format. thanking you! padam singh.
March 4, 2010 by padam

trigonometry math
An aviator heads his airplane due west. He finds that because of a wind from the south, the course makes an angle of 20" with the heading. If his airspeed is 100 mi/h, what is his groundspeed and what is the speed of the wind?
January 4, 2013 by mikee

solve each triangle described below using Δ ABC : 1)a = 10, A = 16°, B = 49° 2)a = 8, b = 7, A = 88° I don't know how to do this i forgot ... could u help (Steve, or Mrs.Sue, or Writeteacher plz help) this topic is Oblique triangle
January 5, 2015 by Anonymous

October 9, 2007 by raygene

What is the arcsin of (pi/2)?
November 8, 2009 by Anonymous

what is sin 35=x/6
October 17, 2010 by aundrea

sin x= -1
May 30, 2011 by Abigail

Find m < D if d=10, e=8 and m< E= 43
June 4, 2011 by MIke A

expand ( 5d-1) 4
June 4, 2011 by MIke A

v=2(ab+bc+ca), solve for a
July 8, 2011 by Kali

Simplify i^45. A. 1 B. i C. –1 D. –i
August 2, 2012 by Anonymous

If g(t) = 5t+1 and h(n) = 2(n - 7), what is the value of h(g(3))?
March 10, 2013 by John

n-1/n divided by 1+1/n
October 19, 2013 by Cait

if cot 2x = 5/12 with 0<=2x<=pi
November 28, 2013 by David

Find the exact value of cosθ if sinθ=-2/3, and θis in standard position with its terminal side in Quadrant IV.
January 13, 2011 by CJ

Math trigonometry identities
2sinθ cosaθ cotθ
February 15, 2016 by Anonymous

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