Question

Find the value
of sin²72°+ cos²72°​

Answer 1

Answer:

1

Step-by-step explanation:

TRIGNOMETRIC EQUATION

1. here the value of theta is 72°
2. according to the trigonometric eqn
3. sin^2theta+cos^2theta =1

here sin

${sin}^{2}7 2 + {cos}^{2} 72 \:$

its of the form sin^2thta +cos^2 theta

hence the value of the question=1

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