need help solving problem

If sint = 4/5 and tis in the first quadrant, find cos(2t)
O -9/25
Transcribed Image Text

If sint = 4/5 and tis in the first quadrant, find cos(2t) O-7/25 O -9/25

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in


Related Calculus Q&A

Find answers to questions asked by students like you.

Q: Solve #7

A: Suppose you  need to find the height of a tall building . Standing  20 meter froth the base of the b...

Q: Evaluate the integral L f(x)dx, where S(x) = {2- x', x1 (Use symbolic notation and fractions where n...

A: this question is solved with the help of fundamental properties of definite integration detailed sol...

Q: Evaluate the given integral. Use c as the constant of integration. e 22xdx

A: Click to see the answer

Q: A particle is moving with the given data. Find the position of the particle. a(t)=t^2 -5t + 4, s(0)=...

A: Click to see the answer

Q: dy dy and dx ne figure below to find the signs of at the points A, B, and C. dx² y = f'(x) A

A: Click to see the answer

Q: (7). Evaluate csc

A: The given expression is cscπ4

Q: Write the sum using sigma notation: 1 + – 5 + – 11 + ... + – 29 Preview i=1

A: Click to see the answer

Q: f(a + h) - f(a) a. Use the definition man = lim h-0 to find the slope of the line tangent to the gra...

A: Click to see the answer

Q: Find the indefinite integral ∫ sin x/√cos x dx

A: Click to see the answer

Q: 32 (a) Evaluate the integral: dx x² + 4 Your answer should be in the form kT, where k is an integer....

A: Given: f(x)=32x2+4 and the integrate from 0 to 2 Also given that the answer in the form of kπ To fin...

Q: 15.7.1

A: Click to see the answer

Q: Expand xy² + 2x – 3y in powers of (x + 2) and (y – 1) upto third degree | terms.

A: Given ,  f(x,y) = xy2 + 2x - 3y  By Taylor's theorem  f(x,y) = f(a,b) + {(x-a)fx(a,b) + (y-b)fy(a,b)...

Q: Given 12 csc (6x) Cot (6x) dx Step 2 How are these values înserted into the Cot (62) equation in ord...

A: Click to see the answer

Q: Evaluate the indefinite integral

A: Click to see the answer

Q: Consider the function, y= 5 sin 1.5 (x+60°)-5. Determine: a. The midline of the function. b. The per...

A: Given function is y=5sin1.5x+60°-5

Q: Find the paramtric equations for the tangent line to the curve  x = t4 - 1, y = t3 + 1, z = t1 at th...

A: To Find: Parametric equations for the tangent line to the curvex=t4-1, y=t3+1, z=t1at the point 15, ...

Q: Sketch the graphs of two distinct functions with the property f′(x)=−x^2+x

A: Click to see the answer

Q: What is the derivative of tan 2x/1-cot2x? Write the answer in simplified form.

A: Given,          y=tan2x1-cot2x

Q: A child enters a carousel that takes one minute to revolve once around. The child enters at the poin...

A: Given, Initial position of the child = (0,1) Time taken by the carousel to revolve one round = 1 min...

Q: 15.8.17mi

A: Click to see the answer

Q: Verify that Rolle's Theorem can be applied to the function f(x)=x3−8x2+17x−10 on the interval [1,5]....

A: Click to see the answer

Q: Setup and evaluate an integral to find the arc length of r = 3cos(theta) from 0 < theta < pi.

A: Given: r=3cosθ , 0≤θ≤π The formula for the Arc length of the polar curve : In polar coordinates,  th...

Q: For the DE (D^4 + 3D^3 + 2D^2)y = 0, Find the value of y when x =1, for the particular solution that...

A: Click to see the answer

Q: Find k so that f has a relative extremum at the point where x = 3. k 2.

A: Click to see the answer

Q: Help me number 10 pls. find the derivatives of the following functions with respect to x and simplif...

A: Click to see the answer

Q: Find dy/dx and d²y/dx?, and find the slope and concavity (if possible) at the given value of the par...

A: Click to see the answer

Q: State the y-axis intercept for the line with the equation 4x + 7y = 84. O a. 19 Оь. 12 O c. 32 O d. ...

A: Given: 4x+7y=84 we know that at y-axis, x-coordinate is zero, so for finding y-intercept we put x=0 ...

Q: 15.7.515

A: Click to see the answer