This is a guest article by Mr.Dipak Singh. if the math-equations/signs are not clearly visible in your browser, then click me to download the PDF version of this article. Trig-Identities Min-Max table Ratta-fication formulas The AM GM Logic Find minimum value of 4 tan2θ + 9 cot2θ Extra facts SSC CGL 2012 Tier II Question The least value of 2 … Read More

Read More...## [Trigonometry] Type#4: Questions based on Trig and Algebra combo

Algebra: 3 formulas Trigonometry: Formulas Case: Only trig formulas Case: Combo of Trig + algebra formulas Mock Questions Before moving to the next topic of trigonometry, I would like to quote the tweets of SSC chairman’s official account: What SSC chief said In SSC CGL 2013, the Maths will be of class 10th level.(tweet link) …questions in trigonometry and geometry … Read More

Read More...## [Trigonometry] Type#3: Complimentary Angles related Questions and approach for SSC CGL

What is complimentary angles? SIN vs COS SEC vs COSEC TAN vs COT Multiplication chain (tan and cot) Finding unknown angle The half angles Summary Mock question What is complimentary angles? If you add two angles (A+B) and if their sum is 90, then they’re called complimentary angles. For example, 60 and 30 are complimentary because 60+30=90. Same way (0,90) … Read More

Read More...## [Trigonometry] Type#2: Table based questions, memorization technique, approach explained for SSC CGL

Introduction Table based Questions Case1: finding value Case2: multiplication chain Case3: finding angle Mock Questions Introduction For SSC CGL trigonometry, there are mainly four types of questions Height and distance: and it has five subtypes. We already saw how to solve them. If you haven’t seen it, click on my youtube playlist Table based: Finding values and angles: We will … Read More

Read More...## [Trigonometry] Introduction, Types of Questions, Shortcut for memorizing 30,45,60 for SSC CGL CDS

## [Trigonometry] HnD Type #1: One Building One Angle finding height, distance or hypotenuse

Introduction: 1 building 1 angle Approach: 1 building 1 angle Mock Questions Introduction: 1 building 1 angle Starting the series of “Trigonometry –>Height and Distance(HnD)–> Five types of Questions. 1st and most easiest of all height n distance questions is “1 building 1 angle”. Here are example questions (all solved in the video) There is a temple on a river … Read More

Read More...## [Trigonometry] HnD Type #2: Broken Trees and Telegraph Poles: Finding original height

Introduction: Broken trees and poles Approach Mock Questions Introduction Trigonometry –>Height and Distance(HnD)–> Five types of Questions. 2nd type of question is “Broken trees and telephone poles”. Here are the examples (both of them solved in the video) Because of storm, a tree is broken from a point above the ground. The top of the tree meets ground @distance that … Read More

Read More...## [Trigonometry] HnD Type #3: One Building Two Angles made easy for SSC

Introduction: 1 Building 2 Angles Approach: 1 building 2 angles Mock Questions Introduction: 1 Building 2 Angles Continuing in the series of “Trigonometry –>Height and Distance–> Five types of Questions. 4th type of question is “One buildings and Two angles”. Such question usually revolve around 2 points on ground, 2 shadows, or flag+building or statue + building type of diagram. … Read More

Read More...## [Trigonometry] HnD Type #4: Two Buildings-Two Angles made easy for SSC

Introduction: 2 Building 2 Angles Approach Mock Questions: 2 Building, 2 Angles Introduction: 2 Building 2 Angles Continuing in the series of “Trigonometry –>Height and Distance–> Five types of Questions. 4th type of question is “Two buildings and Two angles”. Here are example questions (both solved in the video) From the bottom of a 50m temple, the angle of elevation … Read More

Read More...## [Trigonometry] HnD Type #5: Finding speed, time or distance made easy for SSC

Introduction: Trigonometry Speed Time Distance Approach:Trigonometry Speed Time Distance Mock questions Introduction Continuing in the series of “Trigonometry –>Height and Distance(HnD)–> Five types of Questions. 5th and the last type of question is “finding speed, time or distance”. Here are example questions (both solved in the video) A jet is flying at a constant height of 4500 root 3meters. Angle … Read More

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