trigonometry
posted by Amber .
Use fundamental Identities to find the exact value of the expression. Do not use a calculator.
Sin² 65° + cos² 65°=??..
How would I attempt to solve this problem??
Respond to this Question
Similar Questions

Math  Calculus
The identity below is significant because it relates 3 different kinds of products: a cross product and a dot product of 2 vectors on the left side, and the product of 2 real numbers on the right side. Prove the identity below.  a … 
Math
Use properties of logarithms to find the exact value of this expression. Do not use a calculator. 6log6 8  log6 7 
Pre Calc
use properties of the trigonometric function to find the exact value of each expression. Do no use a calculator. sec (  pi/18) * cos (37 pi)/18 I do not see how to do this problem. Every time I do it out I get a reference angle of … 
trigonometry
if cosθ=2/3 and tanθ<0 find the exact value sin(θ5π/3) sin2θ cos2θ cos(θ/2) can some1 please help me? 
Algebra
Use properties of logarithms to find the exact value of each expression. Do not use a calculator. 8^log 8^5 
Algebra 2/ Trigonometry
The expression 4  cos² A is equivalent to 1)5  sec² A 2)5  sin² A 3)5 + sin² A 4)5/sec² A 
Mathamatics
Solve the following trigonometry identities. a) 1cos2(theta) = sin(theta)cos(theta)/cot(theta) b) (1cos2(theta))(1tan2(theta))=sin2(theta)2sin4(theta)/1sin2(theta) *its supposed to be cos to the power of two, sin to the power … 
Trigonometry
Find exact value of each expression sec^1 (2root3) / 5 I have no idea what to do to make that into a value. I know that sec^1 is in quadrants one and two, but I'm not sure how to use that to solve the problem. Thank you! 
trigonometry
prove that: sin²(3x) + cos²(3x) + sin²(x)  cos²(x) = 0 
Please help me solve this  PreCalc
Use identities to find the exact value of the trigonometric expression below. 1/cos2 * π/16  1/cot2 * π/16 PS: in words, the problem is, one divided by cosinesquared, then beside the cosinesquare (still in the denominator) …