Question

PLEASE ANSWER THE MATH QUESTIONS FROM CLASS 10
TEXT Book.

DoNt SpAaM. ​

Answer 1

Answer:

it is the right answer

Step-by-step explanation:

hope it helps you

Answer 2

Answer:

$7 {sec}^{2} \alpha - 7 {tan}^{2} \alpha \\ \\ = 7( {sec}^{2} \alpha - {tan}^{2} \alpha ) \\ \\ = \: \: 7 \times 1 \: \: = \: 7$

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Identity used :

${sec}^{2} \alpha - {tan}^{2} \alpha = 1 \\ \\ = > {sec}^{2} \alpha = 1 + {tan}^{2} \alpha$