#### Thank you for registering.

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

Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0
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

# Write the expression sin 64 degrees in terms of cosine

Karthik Vinod
12 Points
4 years ago
sin (90-x)=cos (x) ( Trigonometry Indentity)
So, sin (90-26)= cos (26) = sin (64)

Cosine and Sine values appear to be related complementary, as in the above answer. If you’ve seen the pattern such as
cos (0) = sin (90)
cos (30) = sin (60)
cos (45) = sin(45)
cos(60) = sin (30)
cos (90) = sin (0),
The sum of the angles equal 90 degrees.
Karthik Vinod
12 Points
4 years ago
I’m sorry I think I’ve misread your question. I suppose you’re asking sin 64 in terms of cos 64.

I think it will be

sin 64 = square root of (1 – cos2 64)

using sin2x + cos2 x =1 =