Question

fill in the blanks in the sin theta cos 10 theta​

Answer 1

Answer:

answered below

Step-by-step explanation:

sin20⁰ = cos80⁰

tan30⁰×tan60⁰ =1

cos40⁰=sin50⁰

hope u got answers

Answer 2

Answer:

(i) sin Ø = cos (90 - Ø)

Thus, sin 20 = cos (90 - 20)

=> sin 20° = cos 70°

(ii) tan Ø × cot Ø = 1

Thus, tan 30 × cot 30 = 1

cot Ø = tan (90 - Ø)

Thus, cot 30 = tan (90 - 30)

= cot 30 = tan 60

=> tan 30° × tan 60° = 1

(iii) cos Ø = sin (90 - Ø)

Thus, cos 40 = sin (90 - 40)

=> cos 40° = sin 50°

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