Question

plzz solve this for points I mark answer as brainliest also follow the person ​

Answer 1

Answer  which one to sole?

Step-by-step explanation:

well, lets try all..question 1 ...cos80/sin10= cos80/sin(90-80)=cos80/cos80=1

similarly 1.b) sqrt(5)*1=root(5) 1.c)1

2.a,b,c)all these 3 are 0 (as sin54-cos(90-54)=sin54-sin54=0)

Answer 2

Answer:

cos 80°/sin 10°

cos 80°/ cos(90°-10°)

cos 80°/ cos 80° [cos○ = sin(90°-○)]

1 is the answer.

root5 × sin 18°/cos 72°

root5 × sin 18°/sin(90°-72°)

root5 × sin 18°/sin 18° [sin○ = cos(90°-○)]

root5 × 1

root5 is the answer.

tan 15°/cot 75°

tan 15°/tan(90°-75°)

tan 15°/tan 15° [tan○ = cot(90°-○)]

1 is the answer.

sec 20°/cosec 70°

sec 20°/sec(90°-70°)

sec 20°/ sec 20° [sec○ = cosec(90°-○)]

1 is the answer.

sin 54° - cos 36°

sin 54° - sin(90°-36°)

sin 54° - sin 54° [sin○= cos(90°-○)]

0 is the answer.

tan 10° - cot 80°

tan 10° - tan(90°-80°)

tan 10° - tan 10° [tan○ = cot(90°-○)]

0 is the answer.

cosec 12.5° -sec 77.5°

cosec 12.5° -cosec(90°-77.5°)

cosec 12.5° -cosec 12.5° [cosec○=sec(90°-○)]

0 is the answer.

I hope it is useful for you.

please make me brainliest.

Thanks

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