costheta=(a^(2)+b^(2))/(2ab), where a an...

`costheta=(a^(2)+b^(2))/(2ab)`, where a and b are two distinct numbers such that `ab gt 0`.

INTRODUCTION TO TRIGONOMETRY AND TRIGONOMETRIC IDENTITIES
OSWAL PUBLICATION|Exercise NCERT EXEMPLAR (Exercise - 8.3)|12 Videos
INTRODUCTION TO TRIGONOMETRY AND TRIGONOMETRIC IDENTITIES
OSWAL PUBLICATION|Exercise NCERT EXEMPLAR (Exercise - 8.4)|8 Videos
INTRODUCTION TO TRIGONOMETRY AND TRIGONOMETRIC IDENTITIES
OSWAL PUBLICATION|Exercise NCERT EXEMPLAR (Exercise - 8.1) (Choose the correct answer from the given four options)|14 Videos
INTRODUCTION TO TRIGONOMETRY
OSWAL PUBLICATION|Exercise Self - Assessment |15 Videos
LINES (IN TWO - DIMENSIONS)
OSWAL PUBLICATION|Exercise BOARD CORNER (LONG ANSWER TYPE QUESTION)|2 Videos

value of (tan47^(@))/(cot 43^(@))=
Text Solution
|
The value of the expression (cos^(2)23^(@)-sin^(2)67^(@)) is
Text Solution
|
The value of the expression (sin80^(@)-cos80^(@)) is negative.
Text Solution
|
sqrt((1-cos^(2)theta)sec^(2)theta) [therefore sin^(2)theta+cos^(2)...
Text Solution
|
If cos A + cos^(2) A = 1 , then sin^(2) A + sin^(4) A is equal to
Text Solution
|
(tan theta + 2) (2 tan theta + 1) = 5 tan theta + sec^2 theta . Write...
Text Solution
|
The value of 2sintheta can be a+1/a, where a is a positive number and ...
Text Solution
|
costheta=(a^(2)+b^(2))/(2ab), where a and b are two distinct numbers s...
Text Solution
|