Who among the following was the first thinker in India to write on spherical trigonometry?

ABhaskaracharya ✓ Correct

BAryabhata

CAkshapada

DKanada

Correct answer: (A) Bhaskaracharya

Explanation

Bhaskaracharya was the first Indian thinker to write on spherical trigonometry, in the Goladhyaya of his Siddhanta Shiromani.

He treated the sphere and celestial geometry with trigonometric method.

Aryabhata gave the sine table but not a treatise on spherical trigonometry.

Akshapada Gautama founded the Nyaya school of logic, not mathematics.

Kanada founded the Vaisheshika school of atomism, unrelated to trigonometry.

Bhaskaracharya composed the Siddhanta Shiromani in 1150 CE.

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