Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

If (1-sinA)(1-sinB)(1-sinC)=1+sinA×sinB×sinC so prove that every side of value is cosA×cosB×cosC

If (1-sinA)(1-sinB)(1-sinC)=1+sinA×sinB×sinC so prove that every side of value is cosA×cosB×cosC

Grade:12th pass

2 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
Dear student

More information is required for the question

Regards
Devendra singh
13 Points
19 days ago
Let (1-sinA) (1-sinB) (1-sinC) =(1+sinA) (1+sinB) (1+sinC) =k
(1+sinA) (1+sinB) (1+sinC) =k........ (1) 
(1-sinA) (1-sinB) (1-sinC) =k........ (2) 
Multiply 1 and 2
(I-sin2A) (1-sin2B) (1-sin2C) = k2
(Cos2A) Cos2B.cos²C= k2
cosAcosBcosC= k
Hence proved. 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free