Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
What is the value Cos 2 A(3-4Cos 2 A) 2 +Sin 2 A(3-4Sin 2 A) 2 What is the value Cos2A(3-4Cos2A)2+Sin2A(3-4Sin2A)2
When expanding 9 cos²A + 16 cos6A -24 cos⁴A + 9 sin²A + 16 sin6A -24 sin⁴A= 9 + 16 (sin^6 A + cos^6 A) -24 ( sin⁴A + cos⁴A)= 9 + 16 (sin²A + cos²A) (sin⁴A + cos⁴A - sin²A cos²A) -24(sin⁴A + cos⁴A)= 9 -8(sin⁴A + cos⁴A + 2sin²A cos²A)= 9 - 8(sin²A + cos²A)²= 9 - 8*(1)²= 9-8= 1
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -