Math, asked by gyan214, 2 months ago

(i) cos'A-sin'A = cos 2A
(1-sin? 2A

Answers

Answered by shivali9

1

Step-by-step explanation:

1+sin2A−cos2A1+sin2A+cos2A

=sin2A+1−(1−2sin2A)sin2A+1+2cos2A−1

=2sinAcosA+2sin2A2sinAcosA+2cos2A

=2sinA(cosA+sinA)2cosA(sinA+cosA)

=sinAcosA=cotA.

Previous Question

Next Question

Similar questions

Hindi, 1 month ago

वंदना कविता में रस है ...

Math, 1 month ago

The volume of the cuboid is 1280cm3. Its breadth and height are in ratio of 8:5 and length is 8cm. Find its: a. Breadth b. Height...

Science, 1 month ago

o , any insects are harmful to us harmful to eis rando are any insects...

Math, 2 months ago

Locate root 10 on number line...

Biology, 2 months ago

Write about the confirmation test to detect corbondioxide ...

Chemistry, 8 months ago

Gas can be liquefied easily by applying pressure and reducing temperature. true or false ...

Math, 8 months ago

ABCD is a rhombus whose diagonal AC makes an angle alpha with AB. If cos alpha =2/3 and OB =3cm , find the diagonals AC and BD?

Math, 8 months ago

two years ago,the age of a father was three and a half times the age of his daughter then.six years hence,the age of father will be ten years more than twice the age of his daughter then.find their present ages.