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

Please provide me the solution of this question. Question no. 5(in the image)

Please provide me the solution of this question. Question no. 5(in the image)

Question Image
Grade:12th pass

1 Answers

Sandeep Tegala
24 Points
4 years ago
write sin(90+30-A)=cos(30-A)
       sin(90+30+A)=cos(30+A)
the sum reduces to cos^2(30+A)+cos^2(30-A)+sin^2(A)
expand it and put cos30 and sin30 values it simplifies to 3/2(cos^2+sin^2)=3/2

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