Question

Cosec square 48 degrees _ tan square 42 degrees =1

Answer 1

Answer:

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Step-by-step explanation:

• cosec ^2 48 degrees - tan^2 (90-48) degrees( tan^2 (90 - theta)= cot theta)

• cosec ^2 48 degrees - cot ^2 48 degrees = 1 [we know that cosec ^2theta - cot ^2 theta = 1]

• hence proved