Question

find all trignometric ratios of 45° π/4 ​

Answer 1

• In Quadrant I,

Sin45 = 1/√2

Cos45 = 1/√2

Tan45 = 1

Cosec45 = √2

Sec45 = √2

Cot45 = 1

• In Quadrant II,

Sin45 = 1/√2

Cos45 = -1/√2

Tan45 = -1

Cosec45 = √2

Sec45 = -√2

Cot45 = -1

• In Quadrant III,

Sin45 = -1/√2

Cos45 = -1/√2

Tan45 = 1

Cosec45 = -√2

Sec45 = -√2

Cot45 = 1

• In Quadrant IV,

Sin45 = -1/√2

Cos45 = 1/√2

Tan45 = -1

Cosec45 = -√2

Sec45 = √2

Cot45 = -1