What is the value of sin2 45° + cos2 45° ?

Challenger App

Home
Questions
Quiz
Notes
Blog
Contact Us
e-Book

No.1 PSC Learning App

★

1M+ Downloads

Get App

What is the value of sin² 45° + cos² 45° ?

A-1

Answer:

C. 1

Read Explanation:

Solution:

Given:

sin² 45° + cos² 45°

Formula:

sin²A + cos² A = 1

Calculation:

∴ sin² 45° + cos² 45° = 1

Alternate Method

sin45° = cos 45° = 1/√2

∴ sin² 45° + cos² 45° = (1/√2)² + (1/√2)² = 1/2 + 1/2 = 1

Read more in App

Related Questions:

The value of sin238° – cos²52° is:

If tanθ + cotθ = 2 and θ is acute, then the value of tan¹⁰⁰θ +cot¹⁰⁰θ is equal to:

In a ΔABC right triangle at B. If $SinC=\frac{60}{61}$ and $CosA=\frac{60}{61}$ , then find the value of the expression $\frac{tanA+cot(A+C)}{CotC+SecASinC}$

If Cos 3θ = Sin (θ - 34°), then the value of θ as an acute angle is:

In the figure <CAB=30°, <CPB=60°. AP 10 centimeters. Area of the rectangle ABCD is.............................. square centimeters.