Question

sin²45 cosec²30_sec²60​

Answer 1

Answer:

⚠ _ Hello _ ⚠

Explanation:

⚫ Solution ⤵

$according \: to \: question \\ { \sqrt{2} }^{2} \: \times \: {2}^{2} - { \frac{2}{ \sqrt{3} } }^{2} \\ \\ = > 2 \times 4 - \frac{4}{3} \\ = > 8 - \frac{4}{3} \\ = > \frac{20}{3}$

❇ Hope it's help❇

Answer 2

sin²45°×cosec²30°-sec²60°

= (1/√2)²×(2)²-(2)²

= 1/2×4 -4

= 2/1 - 4

= 2-4

= -2

sin 45 ° = 1/√2

cosec 30°= 2

sec 60 ° = 2

More information:-

sin , cos ,tan ,cosec , sec , cot all are trigonometric ratio .

sin full form sine.

cos Full form cosine

tan full form tangent

cosec Full form cosecant

sec Full form secant

cot Full form cotangent.