Create your Smart Home App in the Free Webinar on Home Automation. 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 App Development Learn to create your own Smart Home App
16th Jan @ 5:00PM for Grade 1 to 10
Sit and relax as our customer representative will contact you within 1 business day
1)show that sin 20.sin40.sin60.sin80 = 3/16 here all angles are in degress 2)prove that tanA+secA-1/tanA-secA+1 = 1+sinA/cosA
Put the value of sin60 in the L.H.S and then,apply formulae: 2sinAcosB in sequence one by onne. Take sin20 common and apply for 2sin40sin80 and so on.
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -