Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 9 Answered

If cos A + sec A = 2, find value of cos2 A + sec2 A. 
Asked by natashagupta50.9spicertl | 30 Sep, 2020, 03:41: PM
Expert Answer
cosA + secA = 2
(cosA + secA)2 = 22
cos2A + sec2A + 2 cosA secA = 4
cos2A + sec2A + 2 = 4
cos2A + sec2A = 2
Answered by Renu Varma | 02 Oct, 2020, 01:06: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
ICSE 9 - Maths
if CosA+secA= 2, find the value of cosA2 and secA2
Asked by priyapal1106 | 11 Feb, 2021, 08:01: PM
ANSWERED BY EXPERT
ICSE 9 - Maths
Sin A + cosec A = 2
Asked by anufancy1 | 16 Oct, 2020, 10:24: PM
ANSWERED BY EXPERT
ICSE 9 - Maths
If cos A + sec A = 2, find value of cos2 A + sec2 A. 
Asked by natashagupta50.9spicertl | 30 Sep, 2020, 03:41: PM
ANSWERED BY EXPERT
ICSE 9 - Maths
is zero degree is less than and less than 90 degree and zero satisfies 2 sin square theta minus 1 equals to zero find the value of cos theta + cos 2 theta
Asked by maheshranjan253 | 18 Aug, 2020, 07:46: PM
ANSWERED BY EXPERT
ICSE 9 - Maths
Solve it
Asked by padmalochandey3 | 03 Jul, 2020, 07:23: AM
ANSWERED BY EXPERT
ICSE 9 - Maths
if 3cos A = 4sinA, find 4cos²A-3sin²A+2
Asked by ambikaradhika582 | 22 Jun, 2020, 03:56: PM
ANSWERED BY EXPERT
ICSE 9 - Maths
tan30.sec45+tan60.sec30
Asked by shubhaarya25 | 17 May, 2020, 04:04: PM
ANSWERED BY EXPERT
ICSE 9 - Maths
CosA=0.5 /cosB=1/√2 find value of TanA-TanB /1+TanATanB
Asked by ashwinipandey7355 | 03 Dec, 2019, 11:01: PM
ANSWERED BY EXPERT
ICSE 9 - Maths
If the lengths of each side of a rhombus is 8cm and its one angle is 60 degrees,then fing the length of diagonals of rhombus  (Hint:Use the concept of trigonometry)
Asked by laxmi.agarwal055 | 21 Feb, 2018, 07:18: PM
ANSWERED BY EXPERT
ICSE 9 - Maths
In the right angled triangle ABC,angle C=90 degrees and angle B=60 degrees.If AC=6cm,find the lengths of the sides BC and AB  (Hint:Use the concept of trigonometry)
Asked by laxmi.agarwal055 | 21 Feb, 2018, 07:17: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt