Q. 35.0( 3 Votes )

# Fill up the blanks by an angle between 0oand 90o:(i) sin 70o = cos(…) (ii) sin 35o = cos(…)(iii) cos 48o=sin (…) (iv) cos 70o = sin (…)(v) cos 50o = sin (…) (vi) sec 32o=cosec(…)

(i) We know that

Sin θ = cos (90° - θ)

Here, θ = 70°

sin 70° = cos(90° -70°)

sin 70° = cos 20°

(ii) We know that

Sin θ = cos (90° - θ)

Here, θ = 35°

sin 35° = cos(90° -35°)

sin 35° = cos 55°

(iii) cos θ = sin (90° - θ)

Here, θ = 48°

cos 48° = sin (90° - 48°)

cos 48° = sin 42°

(iv) cos θ = sin (90° - θ)

Here, θ = 70°

cos 70° = sin (90° - 70°)

cos 70° = sin 20°

(v) cos θ = sin (90° - θ)

Here, θ = 50°

cos 50° = sin (90° - 50°)

cos 50° = sin 40°

(vi) sec θ = cosec (90°-θ)

Here, θ = 32°

sec 32° = cosec(90° 32°)

sec 32° = cosec 58°

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