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

cos2+sin2=?

cos2+sin2=?

Grade:11

2 Answers

Vijay Mukati
askIITians Faculty 2590 Points
5 years ago
Dear Student,

Please write the question clearly.

Thanks.
arun
123 Points
5 years ago
see i think you want to simlify \sin 2+\cos2
now, \sin 2+\cos2 = \sin2 + \cos(90-88)
\Rightarrow \sin 2+\cos2 = \sin2 + \sin88
\Rightarrow \sin 2+\cos2 = 2\sin(\frac{88+2}{2})\cos(\frac{88-2}{2})
\Rightarrow \sin 2+\cos2 = 2\sin(45)\cos(43)
\Rightarrow \sin 2+\cos2 = \sqrt{2}\cos(43) 
here is your answer that sin2 + cos2 = (square root of 2) cos43
you ask me if your question was different, there is any mistake in my answer or there is any doubt related to this question

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